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Polyurethane Injection Kit

Leak Sealing Water Infrastructure Projects Effectively

Introduction:

In large-scale water infrastructure projects, maintaining structural integrity through effective leak sealing is essential. Cracks and leaks in holding tanks, pipelines, and other critical components can compromise the entire system’s efficiency and safety.

A polyurethane injection kit provides a comprehensive solution to these challenges, combining specialized polyurethane grout, durable injection packers, and a portable, high-powered injection machine. Designed to address the demanding requirements of water infrastructure, these kits ensure reliable, long-term repairs that enhance operational stability. This article explores the pivotal role of polyurethane injection kits in large water projects and their effectiveness in achieving lasting leak sealing in complex environments.

Polyurethane Injection Kit: Effective Leak Sealing in Water Infrastructure Projects

For large-scale infrastructure projects like the North Water Treatment Plant in Gilbert, Arizona, sealing leaks in critical areas such as holding tanks is a top priority. This high-stakes project required an advanced polyurethane injection kit to efficiently seal cracks and maintain the plant’s long-term structural integrity.

Using specialized polyurethane grout, injection packers, and a portable injection machine, this comprehensive kit is invaluable for leak repair across diverse climates, from Arizona’s warm, reaction-accelerating conditions to colder environments.

SealBoss 1570 LV Polyurethane Injection Kit: Engineered for Tight Cracks

At the core of the project’s leak-sealing success was the SealBoss 1570 LV Polyurethane Injection Kit, renowned for its precision in sealing fine cracks. This kit’s key component, the SealBoss 1570 LV Water Stop Foam, is a hydrophobic polyurethane grout designed to penetrate ultra-tight spaces. Its low viscosity and centipoise allows it to fill the narrowest fissures at low pressure, making this polyurethane injection kit highly effective for infrastructure repairs that require thorough and lasting sealing.

BP-13-100 AL Aluminum Packers: Reliable Components in the Polyurethane Injection Kit

Included in this specific polyurethane injection kit are the industrial grade and economically friendlyBP-13-100 AL aluminum packers, which ensure secure entry points for grout injection. These aluminum packers feature a crucial anti-return valve, helping to control grout flow and enabling precise, port-to-port injection techniques. Known for compatibility with both polyurethane and epoxy grouts, these packers are reliable for various long-term infrastructure repair projects, making the polyurethane injection kit versatile and cost-effective.

P2002 Drill-Operated Injection Machine: Power and Portability

Another key element in the polyurethane injection kit is the SealBoss P2002 drill-operated injection machine. Compact yet powerful, this machine was designed specifically for professional applications where maneuverability is essential. The P2002 machine allowed contractors to quickly and accurately apply grout, making it an essential tool in the polyurethane injection kit for large projects requiring efficiency and reliability.s

Adapting the Polyurethane Injection Kit for Temperature Conditions

Arizona’s warm climate introduced additional challenges, as chemical reactions in polyurethane can accelerate under heat. Adjustments to the injection timing and material preparation helped optimize the polyurethane injection kit under these conditions, demonstrating the importance of environmental planning. With temperature-sensitive materials, even slight adjustments to the process, such as adjusting the use of accelerator SealBoss 15x, can yield optimal results.

Top Benefits of Using a Polyurethane Injection Kit System for Water Infrastructure Projects

Using a polyurethane injection kit offers significant advantages for water infrastructure projects:

Optimized Injection System: The polyurethane injection kit combines specialized grout, durable packers, and a reliable pump, creating a fully integrated system designed for optimal performance. This synergy allows for ease of application, controlled flow, and the best possible sealing results, making the process straightforward and efficient for contractors.
Precision in Tight Spaces: Low-viscosity polyurethane grouts allow thorough penetration into fine cracks, ensuring lasting repairs.
Durability and Flexibility: Polyurethane is highly resilient to water exposure and pressure, ensuring that repairs remain intact over time.
Efficient Application: With portable, powerful equipment like the P2002 injection machine, polyurethane grout can be applied quickly and accurately.

Conclusion - Polyurethane Injection Kits

In summary, our various polyurethane injection kits, exemplified by the SealBoss 1570 LV Kit, integrate all necessary components for effective leak-sealing in large-scale water projects.

The North Water Treatment Plant in Gilbert, Arizona, showcases how advanced polyurethane injection kits can enable reliable, long-lasting repairs, highlighting their critical role in preserving essential infrastructure.

Ready to enhance your water infrastructure projects with reliable, long-lasting, leak sealing polyurethaen injection kits?

Discover the benefits of a polyurethane injection kits today. With a fully optimized systems that combines precision grout, durable packers, and a powerful pump, this kit is designed for efficiency, ease of use, and superior results.

Contact SealBoss to learn more about our injection solutions and find the perfect kit for your project needs.

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Concrete Crack Repair

A Quick Guide to Polymer Grout Injection

Introduction:

Concrete structures are highly valued in construction for their durability and strength, but even the most resilient concrete can develop cracks over time. Concrete crack repair is essential to maintain both the structural integrity and the appearance of concrete buildings and infrastructure. Among the most effective techniques is polymer grout injection, which includes using polyurethane resins and foams, acrylates, and epoxy resins. This guide explores these polymer-based injection methods, their benefits, and detailed processes to ensure effective concrete crack repair.

Polymer Grout Injection for Concrete Crack Repair

Injection grouting is a versatile and widely adopted technique for concrete crack repair. It involves injecting specialized liquid grouts into cracks within the concrete under pressure.

As the grout hardens, it seals the cracks while either creating a flexible waterproof seal or restoring the structural integrity of the concrete using high-strength bonding agents.

This article covers three main types of polymer grouts for concrete crack repair:

Polyurethane resins and foams, acrylates, and epoxy resins.

Concrete Crack Repair with Polyurethane Resin and Foam Injection

Polyurethane resin and foam are excellent and highly effective for waterproofing and sealing cracks in concrete structures. Known for their flexibility, polyurethane-based resin and foam solutions are ideal for concrete crack repairs in foundations, basements, retaining walls, dams and concrete structures where water ingress poses a significant problem.

Benefits of Polyurethane Injection for Concrete Crack Repair:

Flexible waterproof seal: Accommodates movement in concrete
Water stop and moisture barrier: Prevents water infiltration
Structural reinforcement: Inhibiting further deterioration of concrete.

Process Overview:

Drill holes at regular intervals along the crack based on conditions
Clean the cracks and holes
Install injection packers into the drilled holes
Inject polyurethane resin starting from the lowest point
Remove injection ports

Polyurethane resins are ideal for waterproofing as they form a watertight seal, preventing water ingress in basements and other below-grade structures. These resins also add structural integrity to the concrete by filling the cracks and preventing further deterioration.

The injection process begins with drilling holes along the length of the crack at regular intervals. The spacing of the holes depends on the size and extent of the crack. The cracks and drilled holes are then thoroughly cleaned to remove any dust, debris, or contaminants, ensuring proper adhesion of the polyurethane resin.

Injection ports, also known as packers, are installed into the drilled holes to prevent leakage during the injection process. The polyurethane resin is injected starting from the lowest point if the crack is vertical or from one end if it is horizontal, continuing until the resin appears at the next port or from the surface.

After the resin has cured, the injection ports are removed and the surface is cleaned. If necessary, the area is ground or sanded to match the surrounding concrete.

Concrete Crack Repair with Acrylate Injection

Acrylate injection grouts are popular for concrete crack repair due to their super low viscosity and fast-setting characteristics. Acrylates are well-suited for fine cracks and are often used in curtain injection to create a waterproof barrier behind the concrete.

Benefits of Acrylate Injection for Concrete Crack Repair:

Super Low viscosity: Penetrates very fine cracks and fissures
Fast setting: Ideal for curtain injection
Versatility: Suitable for various leak and moisture conditions

Process Overview:

For curtain injection drill holes in a pattern at suitable intervals through the structure to create a bladder/curtain seal on the positive side behind the structure
Clean the cracks and holes to remove contaminants
Install injection ports
Inject acrylate grout starting from the lowest point
Remove ports and clean the surface

Due to their low viscosity, acrylates can migrate through very fine cracks that other grouts cannot, making them ideal for situations where other resins cannot penetrate.

The injection process for acrylates begins with drilling holes along the crack at intervals suitable for the size of the crack. The cracks and holes are then thoroughly cleaned to remove any contaminants.

Injection ports are installed into the drilled holes and securely placed to prevent leakage. The acrylate is injected starting from the lowest point or one end of the crack, continuing until the acrylate appears at the next port or the surface. Once the acrylate has cured, the injection ports are removed and the surface is cleaned.

Concrete Crack Repair with Epoxy Injection

Epoxy injection is widely recognized for its high strength and bonding capabilities,making it an excellent choice for structural concrete crack repair. Epoxy resins not only restore the strength of concrete but also create a durable, watertight seal.

Benefits of Epoxy Injection for Concrete Crack Repair:

High tensile and compressive strength: Restores structural integrity to concrete
Versatility in viscosity: Can repair both fine and wide cracks
Outstanding bonding: Forms a permanent bond with the concrete

Process Overview:

Install surface ports over the crack
Seal the crack between the ports
Inject epoxy resin starting from the bottom of the crack
Remove the ports and finish by cleaning and grinding

Epoxy resin formulations provide high tensile and compressive strength, making them ideal for restoring the structural properties of compromised cracked concrete. Available in varying viscosities, epoxy can be used to repair both hairline and wider cracks.

The injection process for epoxy begins with placing surface ports over the crack and bonding them using a fast setting epoxy paste. The crack between the packers is sealed using the same fast cure epoxy paste to prevent epoxy leakage.

The epoxy resin is injected starting from the bottom of the crack and working up, continuing until the epoxy appears at the next surface port. After the epoxy has cured, the injection ports are removed. If necessary, the area is ground or sanded to match the surrounding concrete.

Conclusion - Why Polymer Grout Injection is Ideal for Concrete Crack Repair

Polymer grout injection—which includes using polyurethane resins, acrylates, and epoxy resins—is one of the most effective methods for concrete crack repair. Each type of grout offers unique properties that make it suitable for specific applications, from waterproofing to structural reinforcement. By following the correct procedures and selecting the right materials, repair professionals can successfully restore and preserve the integrity and appearance of concrete structures.

If you need guidance or technical support for your concrete crack repair projects, consult with industry experts. SealBoss offers comprehensive solutions and expert assistance to help you achieve long-lasting results in your concrete crack repair efforts.

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Types of Concrete Cracks

A Concrete Crack Overview

Introduction:

Concrete structures can experience a range of cracks due to various causes, including environmental factors, structural issues, and material weaknesses. As a concrete repair professional, understanding these different crack types and how to address them using suitable repair methods—such as polyurethane resin, foam injection, acrylate gel, and epoxy injection—is essential for maintaining the integrity and longevity of concrete structures.

For Concrete Crack Repair Details read our Quick Guide

Concrete Crack Repair – A Quick Guide to Polymer Grout Injection

Types of Concrete Cracks

Shrinkage Cracks in Concrete
Shrinkage cracks occur when hardened concrete loses moisture during the curing process, causing it to contract. These cracks are common in driveways, slabs, and foundation walls. As concrete dries over time, this moisture loss can lead to shrinkage if the concrete is restrained, resulting in cracks. These cracks may be larger and can appear throughout the structure.
Cause: Uneven moisture loss and restraint in the structure.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or, in some cases, epoxy injection to regain structural strength.
Plastic Shrinkage Cracks in Concrete
Plastic shrinkage cracks form while the concrete is still in its plastic (unhardened) state. They result from rapid moisture evaporation from the surface, often due to high temperatures, low humidity, or strong winds. These shallow cracks resemble a spiderweb pattern and typically affect newly poured slabs.
Unlike regular shrinkage cracks, which develop after the concrete has hardened and contracted over time, plastic shrinkage cracks appear within the first few hours after pouring, making them a common issue in newly poured slabs or exposed surfaces. These cracks are typically shallow and widespread across the surface, while regular shrinkage cracks are generally larger and occur throughout hardened concrete structures.
Cause: Rapid moisture loss from the surface during curing.
Repair Solution: Typically Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress. Acrylate gel in some cases.
Spalling Concrete Cracks
Spalling occurs when sections of concrete break away from the surface, exposing the reinforcing steel. This typically results from corrosion within the steel, causing it to expand and exert pressure on the surrounding concrete.
Cause: Corrosion of embedded reinforcing steel.
Repair Solution: Epoxy injection to fill and bond the cracks, combined with a surface coating to prevent future corrosion.
D-Cracking in Concrete
Durability cracking, or D-Cracking, results from concrete’s inability to withstand freeze-thaw conditions. It usually manifests as cracks running parallel to joints or linear cracks, often with discoloration around the affected area. D-Cracking is primarily caused by the use of coarse aggregates that trap moisture, which expands during freezing and leads to cracking over time.
Cause: Coarse aggregates that absorb moisture and expand during freezing.
Repair Solution: Polyurethane injection, which remains flexible during freeze-thaw cycles.
Corrosion Cracks in Concrete
Corrosion cracks develop due to the rusting of steel reinforcement embedded in concrete. As the steel corrodes, it expands, creating internal pressure that leads to cracking.
Cause: Rusting of embedded steel.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or epoxy injection to regain structural strength.
Stress Corrosion Cracks in Concrete
Stress corrosion cracks arise from a combination of tensile stress and a corrosive environment. These cracks are common in marine structures, bridges exposed to de-icing salts, or industrial facilities where chemical exposure is prevalent. This phenomenon often involves the interaction of aggressive chemicals (like chlorides or sulfates) with embedded steel reinforcement, resulting in cracks that may propagate rapidly under continued stress.
Cause: Interaction of tensile stress with corrosive chemicals.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or epoxy injection to regain structural strength.
Overloading Cracks in Concrete
Overloading cracks develop when concrete structures bear more weight than they were designed to handle. These cracks usually occur in heavily trafficked areas like driveways or industrial floors where heavy machinery operates.
Cause: Excessive loads exceeding the design capacity.
Repair Solution: Most likely high-strength epoxy injection to restore structural integrity.
Concrete Expansion Cracks
Expansion cracks develop when concrete expands due to heat, exerting pressure on the structure. Like most materials, concrete expands when heated, and if it lacks sufficient space to expand, the resulting internal stress can cause cracks. Expansion joints are often installed to provide relief and absorb the stress of expanding concrete.

Cause: Thermal expansion without adequate expansion joints.
Repair Solution: Polyurethane foam injection, which is flexible enough to accommodate movement.
Heaving Cracks in Concrete
Heaving cracks typically occur in cold climates where freeze-thaw cycles are common. When water within the concrete freezes, it expands considerably, causing the concrete slab to lift or “heave.” As temperatures rise and the ice melts, the slab settles back down, leading to the formation of cracks due to the constant movement. This can be prevented by allowing space for expansion and contraction.
Cause: Freeze-thaw cycles and temperature changes.
Repair Solution: Flexible polyurethane foam that can expand and contract with temperature variations.
Crazing and Crusting Cracks in Concrete
Crazing refers to shallow, fine cracks resembling spider webs that appear due to premature drying. Crusting, on the other hand, occurs when the top surface dries faster than the bottom during stamping. While these cracks are not usually structural concerns, they can impact aesthetics and lead to moisture ingress.
Cause: Uneven drying during the curing or stamping process.
Repair Solution: Low-viscosity polyurethane foam for sealing and moisture protection.
Disintegration Cracks in Concrete
Disintegration cracks are a result of the gradual breakdown of concrete, starting with surface scaling and leading to large pieces breaking away. Disintegration often results from chemical attacks like carbonation or sulfate exposure and poor construction practices.
Cause: Chemical attacks or poor-quality aggregates.
Repair Solution: High-strength epoxy injection to reinforce the structure and sealant application to prevent further chemical exposure.
Re-Entrant Corner Cracks in Concrete
Re-entrant corner cracks occur at areas with abrupt changes in geometry, such as around columns, pipe penetrations, sharp corners column bases, pipe penetrations, around rounded objects like manholes, and intersections where slab and wall joints meet. As the concrete dries, uneven shrinkage around these regions creates stress concentrations that lead to cracking.
Cause: Stress concentration around corners or openings.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or, epoxy injection to regain structural strength.
Alkali-Silica Reaction (ASR) Cracks in Concrete
Alkali-Silica Reaction (ASR), also known as concrete cancer, is a harmful chemical reaction between highly alkaline cement paste and reactive silica in aggregates. This reaction produces a hygroscopic gel that absorbs water, expands, exerts internal pressure, and progressive loss of concrete strength leading to map cracking, also known as pattern cracking or alligator cracking. This distinct crack pattern consists of randomly-oriented, web-like cracks on the surface of concrete elements that move in multiple directions.
Cause: Reaction between alkaline cement and reactive silica.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or epoxy injection to regain structural strength.

Choosing the Right Repair Method for many Types of Concrete Cracks

When selecting a repair method for different types of cracks, consider the crack’s cause, size, and impact on the structure:

Polyurethane Foam and Resin Injection: Ideal for flexible sealing in areas with moisture issues and minor movements. Works well for sealing finest cracks as well as large voids or areas prone to temperature changes, due to its expanding and flexible properties.
Acrylate Gel: Perfect for curtain injection and super fine hairline cracks.
Epoxy Injection: Best suited for structural repairs of cracks requiring high strength and load-bearing restoration.

Conclusion

Concrete cracks are an inevitable challenge for any concrete structure due to the diverse range of factors that can cause them, such as environmental conditions, structural issues, and material weaknesses. Understanding the different types of concrete cracks, such as shrinkage cracks, plastic shrinkage cracks, spalling, D-cracking, and more, is crucial for professionals tasked with maintaining the structural integrity of concrete elements.

By recognizing the root causes of these cracks, repair professionals can determine the most effective methods for restoration. For example, structural cracks due to overloading or stress corrosion may require high-strength epoxy injection to restore the original load-bearing capacity, while cracks resulting from freeze-thaw cycles or moisture ingress are better addressed using flexible polyurethane foam injections. For fine hairline cracks or moisture control in large sections, acrylate gels provide a versatile and efficient solution.

Proper selection of repair materials and techniques not only helps in addressing visible damage but also aids in preventing future deterioration, extending the life of the concrete structure. Each crack type demands careful evaluation to choose the right repair approach, ensuring both safety and durability.

Polymer-based injections, including polyurethane resins, foams, acrylates, and epoxies, offer comprehensive solutions for addressing a wide variety of concrete cracks. They provide the versatility to handle anything from superficial fine cracks to deep structural fissures, making them indispensable for professionals committed to maintaining the integrity of concrete elements.

By integrating these repair methods into their toolkit, professionals can confidently tackle any concrete crack repair challenge, ensuring long-term durability and safety for the structures they manage. As always, consulting experts and selecting high-quality products for each specific application remains key to achieving successful and lasting results.

To learn more about how to approach specific concrete crack repair projects, explore our Concrete Crack Repair Quick Guide

Concrete Crack Repair – A Quick Guide to Polymer Grout Injection

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Leaking Crack Repair

Coached by a Top Industry Professional

In the world of construction and maintenance, “leaking crack repair” is a term that frequently emerges, particularly when addressing structures that contain water or are vulnerable to moisture and water intrusion. Addressing these cracks swiftly and efficiently is vital for the structure’s safety and durability.

Sealing the Future – Preserving the Past
Since 1988

Leaking Crack Repair

Sealing the Future – Preserving the Past
Since 1988

The Need for Crack Injection Training

A prominent general contractor, who usually subcontracts such tasks, expressed the need for immediate crack injection training on a specific jobsite. Their primary aim was to acquire the expertise for smaller projects, allowing them to handle leaking crack repair internally on certain timely projects. This proactive approach not only saves time but also ensures that minor issues can be addressed before they escalate.

A Case Study: Water Treatment Tank Crack Sealed

Scope: New Concrete Tank – Water Test Failure – Asses and Seal

The facilities in question comprised three holding cells, separated by two poured-in-place division walls. During a leak test on the outer two tanks, visible cracks were detected. These cracks, deemed non-structural for repair purposes, showed signs of dampness and minor leaks, emphasizing the need for immediate leaking crack repair. Pressure crack injection with a hydrophobic polyurethane expanding water stop foam utilizing an electric injection pump and mechanical injection packers was specified as the method of restoration.

The Repair Process

Materials Used: SealBoss 1570, SealBoss 15x
Additional Tools: SealBoss 13-60S packers, SealBoss 495 Injection Pump, Hammer Drill w/ 12” x ½” bit, PPE

For training purposes, a weeping crack was chosen for repair. This crack, though narrow, spanned about 10 feet in height and meandered across the wall. Given that the newly constructed wall was 14 inches thick, the repair strategy involved guiding the team to drill 5 to 7 inches out from the crack. The drilling was done at a 45-degree angle, aiming back towards the crack, employing the crack stitch method.

Depth of Intersection: The further the drill hole is from the crack, the deeper it will intersect the crack within the structure. This results in a more profound point of injection.

Considerations for Thicker Structures: A deeper injection point is often preferred in thicker structures. However, the length and reach of the drill bit play a crucial role in determining the optimal distance for the drill hole.

Avoiding Dead-End Drill Holes: A drill hole that misses the crack won’t facilitate the injection of the chemical grout into the structure. Such holes are termed “dead-end drill holes” and are ineffective for the purpose of grout injection.

In summary, while determining the spacing of drill holes, it is vital to balance the desired depth of injection with the capabilities of your drilling equipment to ensure effective grout injection.

To ensure precision, the placement was set parallel to the fissure. A 0.5-inch masonry bit, attached to a hammer drill, was used for the drilling process. Once the clean, crack-intersecting holes were established, SealBoss 13-60S heavy duty steel injection packers were installed.

The repair commenced from the bottom, progressing upwards. The SealBoss 495 injection pump, paired with the SealBoss 1570 NSF/ANSI/CAN 61 drinking water contact certified chemical grout, was used for the leaking crack repair. As the repair proceeded, water and material were observed exiting the substrate. This was a positive sign, indicating effective penetration and successful stopping of the water penetration and sealing of the crack.

Final Thoughts

Leaking crack repair is an essential aspect of maintaining the structural integrity of buildings and facilities. With the right knowledge, tools, and materials, such as those provided by SealBoss Corp., even the most challenging cracks can be effectively addressed. Whether you’re a contractor looking to expand your skill set or a facility manager aiming to maintain your structures, understanding the nuances of leaking crack repair is invaluable. Our SealBoss Water Stop Specialists are always ready to assist you.

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Crack Injection Tools & Accessories

Crack Injection Tools & Accessories: Your Ultimate Source for Professional-Grade Solutions

As a leading supplier of concrete crack repair solutions, we are excited to offer an extensive selection of crack injection tools and accessories designed to meet the needs of both low and high-pressure injection systems.

Our product line is engineered to support a wide range of project requirements, ensuring that whether you’re working on large-scale commercial projects or smaller residential repairs, you have access to the tools you need for success.

From experienced contractors to first-time repair professionals, our comprehensive range of high-quality components ensures that your crack repair toolkit is fully stocked, enabling you to execute foundation crack repairs with confidence and precision

Why Choose Our Crack Injection Tools & Accessories?

Versatile Solutions: We cater to both low and high-pressure injection systems, providing flexibility for a variety of applications, from minor cracks to significant structural repairs.
High-Quality Components: Every item in our product line is crafted with durability and efficiency in mind, giving you the tools you need for successful, long-lasting repairs.
Suitable for All Experience Levels: Whether you’re a seasoned professional or tackling crack injection for the first time, our tools are designed for ease of use without compromising performance.

Elevate your crack repair work with our Crack Injection Tools & Accessories – because successful foundation restoration starts with having the right tools.

Pumps

Injection Lances / Needles

Applicators

Hose sets

Crack Injection Hand Tools

Injection Packers

Couplers / Fittings

Surface Ports

Injection Tube System

Static Mixers

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Crack Injection Tools & Accessories – Dependable Solutions for Every Project

At the core of our offering is a commitment to providing reliable and effective crack injection tools and accessories that ensure your repairs stand the test of time. We recognize that no two projects are the same, which is why our range has been carefully curated to meet the diverse requirements of low and high-pressure injection systems.

Regardless of your level of experience, our tools are engineered to help you achieve professional results. From injection ports to specialized pumps and accessories, each item is designed to make the process smoother, more precise, and ultimately more successful.

Unmatched Technical Support

In addition to offering premium products, we are dedicated to ensuring you have the support you need to use them effectively. Our expert technical support team is available to provide guidance, answer any questions, and help you make informed purchasing decisions. Whether you need advice on selecting the right tools or troubleshooting during the repair process, we are here to ensure your foundation restoration is completed with the utmost precision and efficiency.

Your success is our success, and we stand behind every product we offer with unparalleled after-sales support. Trust us to help you achieve flawless crack repairs, every time.

Start your foundation restoration journey with our Crack Injection Tools & Accessories — because lasting success begins with the right tools.

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Crack Injection Pressure

Polymer Crack Injection

Understanding Injection Pressures: A Guide to Polyurethane, Acrylate, and Epoxy Repairs

Introduction

Mastering injection pressures is essential for successful concrete crack repair, influenced by crack type, repair material, and environmental factors. Understanding the dynamics of pressure during injection, particularly as it relates to foam expansion and viscosity changes in resins and gels, is essential for professionals aiming to prevent complications such as spalling or insufficient penetration, and ensure a high-quality, lasting repair.

This guide compares the injection pressures required for polyurethane, acrylate, and epoxy materials, providing insights into optimizing repair strategies for improved outcomes

Assessing Injection Pressures and Product Flow:

Comparing Polyurethane, Acrylate, and Epoxy Crack Injection Characteristics

Within the realm of concrete crack injection, the pressures required for a successful repair can significantly vary. This variance is influenced by the specific conditions of the injection environment and the particular products utilized.

The pressures needed to advance the product are governed by the product’s viscosity and the extent of the crack, specifically the resistance the injected substrate presents to the product’s progress.

Generally, it can be stated that narrower, hairline cracks require increased pressure for successful injection, similar to products with greater viscosity.

POLYURETHANE FOAM CRACK INJECTION PRESSURES

In injection jobs involving polyurethane foam and hairline cracks, the necessary injection pressure often leans towards the high side and may exceed 1000 psi under certain circumstances.

During the injection process, when the foam begins to expand upon contact with water, the product’s viscosity increases sharply. This surge can cause back pressure to rise significantly, potentially reaching extreme levels of 1500-2000 psi or higher, depending on the equipment used.

Excessive injection pressure can lead to concrete spalling, a serious risk that may cause additional complications. This underscores the importance of careful handling and precise pressure management throughout the injection process to prevent damage and ensure a successful outcome.

In these instances, it is strongly recommended to avoid setting the injection packers too shallowly. Instead, the use of longer injection packers, capable of reaching more deeply into the drill hole, is advisable.

This strategy serves to minimize the risks associated with high-pressure injection, contributing to a safer and more effective repair process.

In particularly challenging scenarios, it could be a beneficial strategy to think about transitioning to an ultra-low viscosity polyurethane resin, such as SealBoss 1403 SLV – which boasts a viscosity of a mere 70 cps – or consider an Acrylate Polymer.

ACRYLATE POLYMER INJECTION PRESSURES

Alternatively, you might consider an acrylate-based product, like SealBoss 2400 Acrylate, recognized for its viscosity that nearly parallels the low levels observed in water.

These super low viscosity polymers possess the remarkable ability to infiltrate even the finest of hairline cracks with considerable depth. Consequently, they facilitate the formation of a dependable and flexible seal, while reducing the risk of spalling during the process.

Compared to polyurethane injection foams, the exceptionally low viscosity of acrylate gels can provide enhanced penetration capabilities in very tight spaces at lower pressures.

The use of these advanced products can greatly enhance the effectiveness and reliability of concrete repair interventions.

Acrylate Injection Gel is also used for curtain and bladder injection which is mostly performed at lower injection pressures.

EPOXY CRACK INJECTION PRESSURES

Generally, the pressures involved in epoxy injection can be regarded as significantly lower when compared to those utilized in polyurethane crack injection.

SealBoss Epoxy resins are available in both low and super low viscosity grades. These resins maintain a stable viscosity during the injection process and thus allowing an even flow through the crack.

The process of epoxy injection is executed via ports installed on the surface, which are secured onto the crack with an anchoring epoxy paste. This paste also serves to completely seal the crack’s surface. Adhesively attached epoxy ports, along with the epoxy surface seal, are not built to withstand exceptionally high injection pressures.

As long as a consistent product flow is maintained during injection, most epoxy crack injection tasks can be successfully performed at very low injection pressures. These pressures typically do not exceed a few hundred psi at most.

PRO TIP

As you embark on a concrete crack injection job, it’s recommended to start with an exploratory or mock-up injection phase.

During this phase, identify a distinctly outlined, potentially actively leaking crack that extends deep into the structure for the first injection. This initial phase enables the precise estimation of the necessary quantity of material and the required injection pressures.

It is advised to keep close track of the material consumption and make measurements of the injection pressures needed to push product deep into the structure. Monitoring these aspects assists in developing a clearer understanding of the project’s conditions and planning the subsequent injection process more effectively.

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Restoration Waterproofing

Restoration - Waterproofing

Restoration – Waterproofing with Injection Resins, Gels, and Foams

Restoration waterproofing projects represent a mix of various complex tasks, each with its unique set of challenges. The first crucial step is identifying the root source of the water infiltration, which at times can be a difficult process.

Diagnosis

A correct leak diagnosis might necessitate various steps, such as performing visual inspections of the inside and outside of the structure, examining the surrounding conditions, conducting flood tests, utilizing dye testing, creating mock-ups, and removing paints and finishes.

Waterproofing Restoration with SealBoss Water Stop Systems
– Resins, Foams, Gels, Packers and Pumps –

Setting Defined Objectives

Before starting a restoration waterproofing project, it is crucial to clarify the goals and expectations for every party involved.

It goes without saying that the primary aim of such a venture typically revolves around halting water intrusion. There are many techniques and products that can be used for this, such as polyurethane injection foams, gels, and resins, as well as acrylate injection gels and even epoxy resins in some circumstances. These methodologies come with their individual costs, levels of site disruption, and project timetables. It is essential that all of these elements are thoroughly considered and presented to the end customer, facilitating an informed decision-making process.

Understanding Water Movement and Migration

It is indispensable to understand some key concepts related to water migration and movement around and within soil, structures, voids, joints, and cracks.

Water is Not Always Visible

The obvious appearance of a leak in a specific location does not definitively imply that other areas are devoid of water ingress. Water invariably seeks the path of least resistance, typically navigating towards any openings, fissures, and low spots. Upon remediation of these lower areas, the water may find its way to other compromised zones.

Leak Detection Techniques

The leak detection process is further complicated if the repairs are undertaken during a period of relative dryness. Under such circumstances, leak migration might not become evident until the advent of the next rain event. For more controlled testing, it may be advisable to deliberately flood the surrounding area, creating conditions that could induce a leak at the time of inspection and repair. Conducting flood testing before, during, or after the repair work can contribute significantly towards pinpointing any areas where the leak may have migrated. Executing waterproofing repairs amidst active leaking can effectively help identify and repair leak migration issues.

Restoration Waterproofing Products

Polymer injection foams, resins and gels serve as viable solutions in restoration waterproofing. Their superior qualities make them ideal for sealing leaks, even in wet environments. Polyurethane foams are adept at sealing large leakages, both in volume and speed, expanding upon contact with water to block infiltrations effectively. On the other hand, super low viscosity resins and gels ensure a long-lasting solution for smaller, more intricate leaks, seeping into hairline cracks and curing to provide a waterproof seal. Implementing curtain injection behind a structure can effectively generate a waterproof, membrane-like barrier, thus sealing wet and damp spots within concrete and masonry structures.

At times, epoxy resins may be required to restore structural integrity, even in wet or damp conditions. For an in-depth comparison between epoxy and polyurethane injection, please refer to the detailed information provided here.

In Conclusion

Remedial restoration waterproofing is often an iterative, exploratory process that might necessitate adjustments along the way. Setting realistic expectations, keeping open lines of communication among all involved parties, and maintaining a keen eye for detail are important to the efficient and successful execution of a waterproofing process.

A well-executed waterproofing restoration can add years to the lifespan of a structure, safeguarding it against potential damage and preserving its aesthetic and functional value.

Restoration – Waterproofing Systems

Popular Water Stop & Leak Sealing Injection Links

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Water Stop Foam Grout
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SealBoss ® 1570

Leak Sealing Foam Grout
Water Stop Foam Grout
Hydrophobic Injection Foam

Flexible Polyurethane Injection Foam
Flexible Foam, Water-Activated chemical grout.

SealBoss ® 1570 LV

Leak Sealing Foam Grout
Water Stop Foam Grout
Hydrophobic Injection Foam

Super Low Viscosity Polyurethane Injection Foam,
Water-Activated chemical grout. Drinking Water

SealBoss ® 15X ACCELERATOR

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SealBoss ® 1403 SLV

Leak Sealing Injection Resin
Super Low Viscosity PUR Injection Resin

Two Component Flexible Resin
The solution for wet and dry surfaces and moving cracks. Extremely low viscosity for superior penetration in hairline crack injection.

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Water activated single component hydrophilic Polyurethane grout.

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Hydrophilic poly-acrylate gel / acryclic gel for soil stabilization, curtain-injection, infusion bladder injection into structures and to seal degrading masonry grout.

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Sealing Tie Holes

Tie Holes a.k.a. Tie-Rod Holes in Concrete Structures

Introduction

Tie holes, also known as tie-rod holes, are small openings left in concrete structures after removing tie rods used in formwork. These holes can leak under hydrostatic pressure. An effective solution is polyurethane polymer foam injection.

In this article, we explore how a contractor effectively sealed tie holes and shrinkage cracks in water tanks for a rural water district. Utilizing the SealBoss Injection System, the team successfully resolved these challenges. This case study underscores the critical role of proper training and specialized equipment in preserving the integrity of concrete structures.

What are Tie Holes?

Tie holes are small openings in concrete structures that result from the removal of tie rods. Tie rods are essential components used in concrete formwork, which is the mold into which concrete is poured to achieve the desired shape. These rods help maintain the alignment and stability of the formwork during the concrete pouring and curing process.

Tie holes may start to leak under hydrostatic pressure caused by a source of water on the opposite side of the structure.

Polyurethane Polymer Foam Injection is an effective method to seal leaking tie rods permanently.

Sealing Tie Holes and Cracks

A Case Study in Effective Water Tank Repair

In the world of construction, particularly in the construction of water tanks, shrinkage cracks and tie-holes are common issues that can lead to slowly weeping or even significant leaks. These problems are often accompanied by visible efflorescence, signaling a need for immediate and effective repair.

A recent project by a contractor in a rural water district expansion north of Atlanta, Georgia, perfectly illustrates how these challenges can be met with the right expertise and equipment.

Encountering the Challenge

During the construction of water tanks in this project, the contractor encountered both shrinkage cracks and tie-holes showing signs of leakage.

To address these issues effectively, the contractor sought on-site support and comprehensive systems training, specifically in the use of SealBoss 1510 NSF Hydrophobic Water Stop Foam and the P2002 High-Pressure Injection Pump.

The Training and Repair Process

The training began with a thorough inspection of the tank to identify the most actively leaking areas.

This was followed by a demonstration of the SealBoss Injection System application. The repair process involved a strategic approach to drilling holes:

The 1, 2, 3, 45 Degree Injection Method was used for the shrinkage cracks, and for sealing the tie-holes, a 45-degree hole was drilled 4 inches from the edge of each tie-hole until the steel insert was reached.

Preparation and Injection

Before the injection process, each drilled hole was pre-injected with water using a spray bottle. Given the ambient temperature of 38 degrees Fahrenheit, hot water (between 70 and 90 degrees Fahrenheit) was used for pre-injection to assist with the catalyzation time of the 1510 foam in the cold concrete. After flushing the holes, the installation of the SealBoss 13-100 AL Evolution Mechanical Packers commenced, followed by the injection process using the P2002 high-pressure injection pump.

Hands-On Learning and Independent Operation

The P2002 pump, known for its simplicity and drill-operated mechanism, was explained in detail. The training emphasized understanding injection pressure and the patience required for successful application.

Initially, the technician assisted with the pump operation, but within 10 minutes, the crew was able to inject independently.

Each packer was injected until there was positive refusal of material around each tie hole, and the same process was applied to the cracks.

Ensuring Long-Term Success

Once the crew gained confidence in operating the system, the focus shifted to cleaning and maintenance of the pump, ensuring its longevity and effectiveness for future projects.

Conclusion

This project north of Atlanta, Georgia serves as a prime example of how proper training and the right equipment can effectively address leaking tie holes and shrinkage cracks in new water tank construction.

The use of SealBoss 1510 NSF hydrophobic foam and the P2002 high-pressure injection pump, combined with hands-on training and a strategic approach to sealing, provided a durable solution to the problem of shrinkage cracks and tie-holes.

This case study not only highlights the importance of addressing these construction challenges promptly but also demonstrates the value of expert guidance and training in ensuring the longevity and integrity of water storage facilities.

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Sealing Tie Holes - Water Stop System

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Epoxy versus Polyurethane Crack Injection

Epoxy vs Polyurethane Injection

Crack Injection Superheroes

Epoxy Resins versus Polyurethane Resins
A Concrete Crack Injection Comparison

Epoxy versus Polyurethane Crack Injection

Epoxy and Polyurethane Resin Based Crack Repair Systems are the Superheroes of Concrete Crack Repair

When you need to repair a crack in a concrete structure — such as a foundation or wall — from the inside (negative side) of the structure, there are typically two injection techniques and corresponding product technologies that you need to consider — epoxy resin injection and polyurethane chemical grout injection.

Epoxy Versus Polyurethane Injection – How to Differentiate the two Injection Methods and Techniques

Epoxy injection is typically performed on dry substrates versus polyurethane injection that works very well on wet and actively leaking substrates.

Fully cured high quality epoxy offers outstanding compressive and tensile strength properties, making epoxy injection the preferred method where structural crack repair is desired.

Polyurethane injection is performed to seal active leaks, prevent moisture migration and to protect structures from corrosion and water related decay. Polyurethanes are designed to interact and expand in contact with moisture, making polyurethane injection technology superior in wet and actively leaking environments.

There is an injection solution to most concrete crack related problems. But, there is no one-size-fits-all solution.

Let us compare some of the main characteristics of each type of crack injection, outlining their strengths and their recommended range of applications.

Injection Repair Conditions and Objectives

Does your crack impact the structure?
Do you need to restore structural strength to the structure?
Does the crack carry water?
Is the crack actively leaking?
Do you need to protect the structure from water ingress and water damages?

Comparison of the Characteristics of Epoxy and Polyurethane Polymers and Elastomers

Epoxies and polyurethane polymers are chemical resins with different reaction profiles and physical properties.

Epoxy is a strong adhesive or glue that does essentially not expand. While curing epoxy creates a strong bond with the concrete substrate and ultimately provides a repair of high compressive and tensile strength properties.

Epoxy is a two component system, one component is the epoxy resin and the second is the hardener. The components are blended in the static mixer of the injection pump applicator immediately before crack injection. Injection epoxies cure chemically within a specified time and harden further over days and weeks.

Polyurethane injection foam is primarily a water activated sealant or leak-seal grout with expanding properties during reaction. The cured product creates a compression seal of varying flexibility.

Polyurethane foam resin often utilizes an activator or accelerator. Resin and activator are mixed before they are injected. Polyurethane resins are also available in two component chemical cure variants. No moisture needed.

Polyurethanes are extremely versatile. Their chemical and physical properties vary to suit the needs of specific applications and jobsite conditions.

Polyurethane resins vary from rigid and strong to flexible, rubbery and soft elastomer compositions. The initial cure time for crack injection polyurethanes is generally 1 – 10 minutes and is influenced by accelerator usage, temperature and moisture availability.

Differences in The Epoxy and Polyurethane Crack Injection Processes

Epoxy crack injections are typically performed at lower injection pressures (20-200 psi) and with surface mounted ports.

Polyurethane crack injection is often performed at higher pressures to move the expanding foam through the cracks with special injection pumps and packers installed into drilled holes. The injected polyurethane is supposed to fill the crack through the entire thickness of the structure thereby preventing water from entering the crack.

Epoxy Crack Injection

Structural Repair – The tensile strength and compression strength of cured epoxy is typically much greater than the strength of concrete making epoxy a good choice for foundation wall structural crack repair. When tension is applied to a crack due to thermal cycling or other forces, the cured epoxy crack repair will not typically yield. Epoxy is typically rigid and not flexible.
Extended curing time allows the epoxy to penetrate the crack and fine fissures. SealBoss epoxies can be obtained in various viscosities to suit fine to wide cracks.
Dry Substrate Recommended – Epoxy typically has reduced adhesion to wet and saturated surfaces. A dry environment is desired for best results. Actively Leaking Cracks – Epoxy cannot be used for actively leaking cracks. Epoxy resin needs to be contained in a crack until cured sufficiently to achieve full strength.
Epoxy injection is performed through surface mounted ports. Moisture adversely affects the adhesive qualities of the anchoring epoxy used to glue the injection ports onto the crack. Without sufficient bond strength, the anchoring epoxy will not withstand the pressure of the injection.
SealBoss provides mechanical packers and special plastic packers to permit epoxy injection in adverse environments.

Polyurethane Crack Injection

Wet and Dry Applications – Polyurethane injection foams and resins can be used in adverse environments regardless of the condition of the crack and the weather. The crack can be fine or wide, actively leaking, full of mud and/or mineral deposits. (Whenever possible it is advised to flush and clean out a crack prior to injection)
Water Stop and Structure Preservation – The rapid curing of polyurethane is beneficial when stopping a gushing leak. The chemical expansion of the polyurethane foam (typically 2-40 times its original volume) makes polyurethane very effective at filling voids within the concrete. Polyurethane resins and foams play an important role in preserving concrete and rebar.
Not a Structural Repair – Polyurethanes do not provide structural repairs in concrete cracks.
High injection pressures are often required to move PU foam into fine cracks and fissures.
Mechanical packers require drill holes. No matter if the crack is actively leaking, under water or the concrete is deteriorated, mechanical packers are designed to work in adverse environments.

Product Characteristics

EPOXY (EP)

Rigid, very strong adhesive for structural repairs
Mainly for dry or damp environments, potentially reduced adhesion on wet substrates
Excellent to regain structural strength in torn structures: earthquake damage, extended stress damage, shrinkage cracks, corrosion
Not a water-stop material and does not tolerate extended movement – cracks can form next to repair
Two component formulation – Quick reaction time and cure
Viscosities from very low liquid to paste
Very resistant, long term solution
Available in bulk and cartridges
Recommended Products:
Resins: 4040, 4050
Paste/Putty: 4500 Epoxy Quick Seal
Cartridge System: 4000 Epoxy Cartridge System
SealBoss Surface Mounted Ports / Injection Packers

POLYURETHANE (PU)

Flexible to semi-flexible sealants with less structural strength compared to EP
Typically Hydro-Active – reacts with water forming foams (water-stop & leak-seal), gels and solid (non cellular) flexible or semi flexible sealants
Two Component PU Resins can be dry reactive. No water needed
Classified as hydrophobic (foams/resins) for crack injection, joints voids or hydrophilic (foams/gels) for curtain, bladder injection behind structures. Both groups are water activated for use in wet environments
Superior water-stop capabilities
Single or two component, accelerators common. Viscosities low to medium. Very resistant, long term solution
Recommended Products:
Foams: 1510, 1570, 1570 LV
Flexible resin: 1403, 1503 LV-Resin Line
Gel/Foam: Flexgel2
Cartridge System Available

Epoxy versus Polyurethane – Conclusion

In non structural water related repairs PU is generally the material of choice. This is true for most below grade repairs including basements, tunnels, parking garages and manholes. PU is a good void filler and is also used to stabilize dirt and lift structures.

EP is an excellent adhesive for structural repairs of stressed concrete substrates and deteriorated concrete structures.

TIP

When initiating concrete crack injection, it’s advisable to commence with an exploratory grouting or mock-up injection stage. This entails identifying a deep, distinctly defined, and potentially actively leaking crack for the initial injection. This preliminary step facilitates the estimation of required material quantity and necessary injection pressures.

The consumption of material should be closely monitored and measured, and the injection pressures should be accurately assessed.

This process helps us understand the conditions of the project and plan the remaining injection process effectively.

Accessories

EPOXY (EP)

Surface port injection at lower injection pressures 30 – 100 psi — Reason: Injection is typically done in dry environments and surface ports can be attached easily with epoxy adhesive.
Holes do not have to be drilled – there are exceptions
The crack surface between the ports has to be surface sealed to prevent leakage during injection
The viscosity of the epoxy resin stays low during the injection process, resulting in lower injection pressures
Recommended Products:
Surface ports, specialty ports

POLYURETHANE (PU)

Mechanical packer injection at higher pressures 50 – 3000 psi — Reason: PU injection is often performed in a wet environment where adhesives for surface ports cannot be used.
Mechanical packers are installed by drilling a hole into the structure which the packer fits snugly. The packer is tightened mechanically for high pressure injection
PU Foam immediately reacts with moisture in the crack increasing resistance of product flow, resulting in higher injection pressures
Recommended Products:
Complete line of packers: S-Type, R-Type, custom sizes, Hammer-in packers, specialty packers

Conclusion:

PU generally needs higher pressures and therefor the more sophisticated connectors / packers. There are many exceptions. For example curtain injection with PU gel into the space between structure and soil needs lower injection pressures but higher rates of material flow. The filling of larger voids and joint injection also uses lower pressures. PU injection through surface ports is not common, but high pressure epoxy injection through packers is seen more frequently. Reasons could be very thick concrete to be penetrated or damp / wet surface conditions.

Pumps

EPOXY (EP)

Two component equipment for most epoxy resins for ease of use and precise mixing
Epoxy is a very strong adhesive and may render equipment unusable if not cleaned thoroughly
EP is not very moisture sensitive and not moisture reactive. Epoxy does not expand during reaction – which results in lower injection pressures
Pneumatic or manual guns for cartridge systems / smaller jobs
Two component injection pumps achieve high injection pressures for large volume commercial injection projects. Pumps are pneumatic or electric
SealBoss Corp. supplies EP resins and paste also in cartridges
Recommended Products:
Hand held guns, electric pump P3003, pneumatic pump PA3000, 4000 Cartridge System

POLYURETHANE (PU)

Single component equipment for most water activated hydrophobic PU foams, accelerator to be added prior to pumping
Either single or two component equipment for true two component PU resins such as 1400 LV-Resin Line
Either single component or multi-ratio two component equipment for hydrophilic PU Gels based on the application and product.
Single component pumps include inexpensive hand held devices, hand pumps and electric pumps
Multi ratio devices can be manual, electric and pneumatic. SealBoss Corp. supplies PU in bulk and in containers as small as 1 gal units and in cartridges
Recommended Products:
Hand held guns, manual pumps, electric pumps, Signature Line Pumps

Choose Your Pump:

No matter if you are faced with a minor basement leak or a major tunnel gusher of large hydrostatic pressure , we have you covered. You need to have the right tools at hand to achieve the results. SealBoss infrastructure repair pumps provide you with tried and true concrete solutions.

Final Thoughts:

Over the years, injection technology has evolved, becoming both sophisticated and intricate. At SealBoss, we pride ourselves on offering a diverse range of products, pumps, and accessories tailored to meet the ever-growing needs of injection applications.

Our commitment extends beyond just providing products; we offer comprehensive technical support to ensure you find the perfect product-equipment synergy for your project’s success. We invite you to leverage our expertise and training resources. Remember, we are only a phone call away, eager to assist and guide you.

SealBoss ® EPOXY

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SealBoss ® POLYURETHANE

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How to Fix Foundation Cracks

"Concrete Cracks have Met Their Match..."
- Popular Mechanics -

How to Fix Foundation Cracks

Popular Mechanics – Pop Mech Pro, Publishes Article with Detailed Pictures about “How to Fix Foundation Cracks”, using the SealBoss Crack Repair Method with Specialized Leak-Sealant and Injection Packers:

Concrete cracks have been an issue since the beginning of concrete construction three millennia ago. The article explains that modern concrete lacks self-healing properties, which causes cracks to worsen over time and impacts both homeowners and engineers.

Popular Mechanics’ century-old building in Easton, Pennsylvania, suffered from cracked concrete until local contractor repaired it. They used a specialized leak-sealant from SealBoss and ordinary tools to fill and seal the cracks, preventing further water entry and degradation.

The article discusses the SealBoss 1510 Water Stop Foam solution for fixing concrete cracks, a common issue affecting many structures from homes to bridges.

The article highlights how modern concrete deteriorates over time due to water seepage through cracks.

“After the water-stopping material has hardened into a plastic foam, the contractors removed it from the wall and floor with putty knives and scrapers. They removed the packer with a socket and socket wrench, then filled the remaining hole with mortar. With that, the job is complete.”

— Popular Mechanics, Roy Berendsohn

The solution presented in this article and involves a straightforward repair method demonstrated by the contractor, using ordinary tools and SealBoss 1510 specialized leak-sealant from SealBoss. The process includes drilling holes along the crack, inserting injection ports, and injecting an expanding liquid polyurethane resin mixed with an accelerator to seal the crack effectively.

This method has proven successful in preventing further leaks through the foundation of the century-old building occupied by Popular Mechanics in Easton, Pennsylvania, showcasing its effectiveness in concrete crack repair.

“We were amazed at the simplicity of the process and the good results it produced–we haven’t seen any further leaks through the foundation since the two men completed their work.”
— Popular Mechanics, Roy Berendsohn

References

Link to the article — “How to Fix Foundation Cracks”
Popular Mechanics, Pop Mech Pro, 1/24/2024, by Roy Berendsohn

SealBoss Crack Repair Kits