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Shut Down Gushing Leaks – SealBoss 15X Accelerator for Water Stop Foam

Shut Down Gushing Leaks
15X Accelerator for Water Stop Foam

SealBoss 15X Accelerator / Catalyst for Water Stop Foam

SealBoss ® 15X – Wide Range Accelerator

Shut Down Gushing Leaks
Hairline Crack Injection Leak-Seal
Slow Reaction
Fast Reaction
Semi Rigid Foam
Flexible Foam
Low Viscosity Foam

A Powerful Additive for the SealBoss Hydrophobic Injection Foam Line

By adding accelerator at varying ratios you can change reaction time and behavior of each foam to precisely suit your needs. With a little accelerator ‘magic’ you can shut down gushing leaks, seal hairline cracks and perform soil stabilization with the same product.

Shut Down Gushing Leaks: SealBoss 15X Accelerator and 1510 Water Stop Foam in Action

Water infiltration in concrete structures is one of the most persistent and destructive challenges in the construction and infrastructure repair industry. Whether it’s a gushing leak in a basement wall or an active water ingress point in a tunnel or foundation, fast, reliable solutions are crucial to protect structural integrity and reduce costly damage.

One of the most effective and versatile approaches to address these critical issues is the use of SealBoss 15X Accelerator in conjunction with SealBoss 1510 Water Stop Foam.

This combination empowers contractors and engineers to shut down gushing leaks quickly, safely, and permanently—even in high-pressure or wet environments.

The Problem: Gushing Leaks in Concrete

Gushing leaks often appear in concrete structures due to poor waterproofing, failed construction joints, cold joints, or natural aging. These leaks can carry hydrostatic pressure, often increasing during rainfall or seasonal groundwater shifts. Left untreated, they can cause:

Corrosion of steel reinforcement
Deterioration of concrete
Property damage and high repair costs
Mold and mildew growth

Because these leaks occur under pressure and may spread through hairline cracks or porous areas, traditional surface patching techniques often fail.

The Solution: Shut Down Gushing Leaks with Polyurethane Injection

Enter SealBoss’s polyurethane foam injection system, specifically the 1510 Water Stop Foam enhanced with 15X Accelerator. This powerful two-part solution is designed for rapid expansion and water-reactive sealing, forming a flexible, watertight foam barrier inside the structure itself—where the leak originates.

Meet the Products: 1510 Water Stop Foam and 15X Accelerator

SealBoss 1510 Water Stop Foam

This single-component, hydrophobic polyurethane grout is engineered to react quickly with water, expanding to create a semi-rigid, closed-cell foam that effectively fills voids and seals leaks. The foam:

Reacts in seconds when in contact with water
Expands to 30–40 times its original volume
Adheres to wet surfaces
Creates a long-lasting seal in cracks, joints, and porous concrete

Learn more: SealBoss 1510 Water Stop Foam

SealBoss 15X Accelerator

SealBoss 15X is a multi-range catalyst designed to control the reaction speed and expansion behavior of polyurethane foams like the 1510. This accelerator allows contractors to fine-tune foam performance based on environmental conditions and leak severity.

Use as little as 2% or as much as 20% by volume
Adjusts reaction speed from slow to ultra-fast
Works with 1510, 1570, and 1570 LV foam systems
Ideal for gushing leaks, hairline cracks, and soil stabilization

With 15X, users can slow down foam for deep penetration or speed it up to instantly shut down gushing leaks.

Learn more: SealBoss 15X Accelerator

How It Works: The Injection Process

Preparation
Identify the source of the leak. Drill angled holes targeting the crack or joint. Install mechanical injection packers.
Mixing
The SealBoss 1510 foam is catalyzed with a specific percentage of 15X Accelerator based on site conditions. For rapid leak sealing, 10–20% is often used.
Injection
Using a high-pressure pump (like the SealBoss P2002), the catalyzed resin is injected into the structure. When it encounters water, it reacts instantly—expanding and pushing water out while filling every crevice.
Curing
The foam cures rapidly, forming a permanent seal. Once the leak is stopped, packers are removed, and injection ports are patched.

Applications: Where to Use the SealBoss System

Below-grade foundation walls
Elevator pits
Parking garages
Tunnels and subways
Cold joints and construction joints
Dams, reservoirs, and tanks
Culverts and stormwater systems

Whether facing a slow leak or a gushing torrent of water, the SealBoss system provides a proven method to regain control and restore watertightness.

Real-World Performance

Contractors worldwide rely on the SealBoss 1510 and 15X system to manage demanding jobs. One of the key advantages is its flexibility. In colder climates or low-temperature substrates, a higher percentage of accelerator ensures the foam sets quickly. In situations where deeper penetration is needed, less accelerator allows the foam to travel before expanding.

With no need for excavation or external sealing, this internal injection method minimizes disruption while delivering powerful results.

Why Choose SealBoss?

SealBoss is ISO-Certified: Quality and consistency in every batch
Fast Support: Regional sales and technical teams available for on-site guidance
Versatility: Solutions for leak seal, soil stabilization, and crack repair
Training: On-demand training and technical support for contractors and engineers

Shut Down Gushing Leaks—The Right Way

Time is critical when you’re dealing with gushing leaks in a concrete structure. The longer water flows, the greater the risk of structural and environmental damage. The SealBoss 1510 and 15X Accelerator combo gives professionals the tools they need to act quickly and confidently.

With customizable reaction times, exceptional expansion, and field-proven durability, this system continues to be a go-to solution across a range of industries.

Get Expert Support Today

Need help selecting the right system for your leak repair project? Our team is here to assist. Whether you’re new to injection systems or looking to upgrade your leak sealing arsenal, SealBoss can provide the expertise, products, and equipment you need.

Contact us today: SealBoss Contact Page
View all leak sealing solutions: SealBoss Water Stop Products

Related Articles

15x accelerator spans all three of our base resins the 1510 Water Stop Foam, the 1570 Flexible Leak-Seal Foam and a 1570 LV Low Viscosity Crack Injection Foam. 15X Accelerator can be used in a wide range by volume in a percentage anywhere between 2% and 20%.

15x Accelerator - the little star that does a lot.

Inquire more about 151X Accelerator when you call us here at SealBoss. Your representative will be happy to help you out.

Chris Coderre

National Sales Manager

SealBoss ® 15X ACCELERATOR

Accelerator
Single Component Injection Foams

Accelerator For 1510/1570 PU Injection Foam.

Adjust foam gel-time and foam expansion from low foamer to high foamer depending application.

SealBoss ® 1510

Concrete Leak Sealing

Leak Sealing Foam Grout
Water Stop Foam Grout
Hydrophobic Injection Foam Grout

Our #1 Selling Polyurethane Injection Foam
Water Cut-Off Injection Grout
Semi-Flex Foam, Water-Activated chemical injection grout. Our most versatile product. Water activated hydrophobic polyurethane foam, expands up to 30-40 times.

Contact Your SealBoss ® Technician

Cold Joint Injection

Leaking Cold Joints Sealed

Cold Joints in Concrete Structures and the Polyurethane Polymer Solution

Introduction

Concrete is a versatile and strong material that plays a key role in modern construction, but it comes with certain challenges. One common issue is the formation of cold joints — visible lines or separations that occur when new concrete is poured against concrete that has already begun to set. These joints can compromise the structural integrity, creating weak points that are vulnerable to water infiltration, leaks, and long-term damage. Proper identification and repair of cold joints are essential for maintaining the durability and performance of any concrete structure.

Cold Joint Injection: Permanent Solutions for Concrete Leaks and Structural Integrity

Concrete is one of the most widely used building materials in the world due to its strength, versatility, and durability. However, like all materials, concrete has vulnerabilities. One of the most common and potentially damaging issues in concrete construction is the formation of cold joints. These unplanned discontinuities in concrete can significantly impact the long-term integrity of structures, particularly when they become pathways for water infiltration.

Fortunately, cold joint injection using advanced polyurethane polymers offers an effective and lasting solution. This article will explore what cold joints are, why they occur, the risks they pose, and how cold joint injection provides a reliable fix for both residential and commercial construction projects.

What are Cold Joints?

A cold joint forms when freshly poured concrete is placed next to or on top of concrete that has already started to set. Rather than bonding as one cohesive mass, the two layers remain separated by a visible and structural boundary. This boundary lacks proper adhesion and can act as a weak point in the structure.

Cold joints typically occur due to:

Delays in pouring concrete batches
Interruptions in concrete delivery or placement
Temperature variations that cause uneven curing
Scheduling issues or construction mistakes

The result is a distinct line or seam in the concrete that appears harmless at first but can lead to serious problems over time. Cold joints are particularly vulnerable to water infiltration, which can trigger internal corrosion of rebar, cause freeze-thaw damage, and reduce the overall life expectancy of the structure.

Cold Joint Injection: The Polyurethane Polymer Foam Solution

The most effective way to repair and seal cold joints is through a process called cold joint injection, using high-performance polyurethane injection resins. This method restores the integrity of the concrete joint and creates a watertight barrier that prevents future leaks.

Why Use Polyurethane for Cold Joint Injection?

Polyurethane injection resins are hydrophobic or hydrophilic foams that expand upon contact with moisture, filling voids and cracks with precision. When injected into a cold joint, the resin reacts with any water present, forming a flexible yet durable foam that bonds tightly to the surrounding concrete.

Benefits of polyurethane cold joint injection include:

Expands to fill cracks and voids – Ensures complete coverage and sealing
Forms a watertight barrier – Prevents water infiltration and leak recurrence
Flexible and durable – Adapts to slight movements and temperature changes
Non-invasive – No need for major demolition or reconstruction
Fast-curing – Rapid installation and reduced downtime

Step-by-Step Cold Joint Injection Process

The cold joint injection procedure typically involves the following steps:

Inspection and Assessment
The area is assessed to determine the severity of leaks, substrate condition, and appropriate injection points.
Drilling and Packer Installation
Holes are drilled at specific intervals along the cold joint. Mechanical injection packers are inserted to allow precise resin delivery under pressure.
Injection of Polyurethane Resin
Using a high-pressure injection pump, the polyurethane resin is injected into the packers. As it travels into the joint, the resin reacts with moisture, expanding and filling all voids and cracks.
Sealing and Curing
Once the injection is complete, the resin cures quickly, forming a flexible, watertight seal. Packers are then removed and holes patched.
Final Inspection
The site is checked to ensure the leak has been completely sealed and no further moisture intrusion occurs.

Real-World Application: SealBoss Cold Joint Injection in Kansas City

A recent project in Kansas City demonstrated the effectiveness of SealBoss’s cold joint injection system. A structure with both vertical and horizontal cold joints had developed active leaks due to a failed pre-existing waterproofing system.

SealBoss’s Regional Sales Manager provided on-site support and training during the injection process. The contractor drilled injection holes and installed ½” mechanical packers for a secure fit. Based on site conditions, both angled and direct drill placements were used.

The team injected SealBoss 1510 polyurethane resin using the P2002 high-pressure single-component injection pump. Due to the low substrate temperatures, the resin was catalyzed with 15% SealBoss 15X High Foaming Accelerator, which ensured rapid and effective expansion. The result? All active leaks were sealed successfully, and the structure’s cold joints were permanently reinforced.

Advantages of SealBoss Cold Joint Injection Systems

SealBoss offers industry-leading cold joint injection materials and equipment designed for professional contractors and infrastructure repair specialists. Key advantages include:

Complete waterproofing solutions for cold joints, cracks, and voids
High-performance resins that expand even in low temperatures
Specialized pumps and packers for efficient delivery
On-site technical support and training
Trusted by contractors worldwide in demanding applications

Whether repairing parking garages, basements, retaining walls, or tunnels, SealBoss systems deliver reliable, long-term protection against water intrusion and structural decay.

Cold Joint Injection: An Investment in Longevity

Repairing cold joints with polyurethane injection is not just a short-term fix—it is a long-term investment in structural performance. By addressing water infiltration early and effectively, property owners and contractors can prevent costly repairs, ensure code compliance, and extend the service life of critical structures.

For engineers, architects, and maintenance professionals, understanding the value of cold joint injection is key to preserving the quality of concrete infrastructure.

Contact SealBoss for Expert Cold Joint Solutions

SealBoss is a global leader in leak sealing, structural repair, and concrete protection technologies. If your project involves water leaks, cracks, or cold joints, contact our team for expert guidance, high-performance products, and technical support tailored to your needs.

SealBoss delivers on-site training and specialized technical assistance for tackling cold joint leaks, as well as other concrete structure issues.

Considering a Solution for Sealing Cold Joints During Construction?

Look no further! We not only offer systems specifically designed for sealing cold joints but also provide expert advice to prevent moisture issues right from the construction stage.

Materials and Tools Used

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Please don’t hesitate to call us at 714-662-4445 with any questions, or request to be contacted here, we look forward to helping you find a solution. On-site support from knowledgeable and experienced technical reps is available upon request.

Contact Your SealBoss ® Technician

How to Seal Shrinkage Cracks

Shrinkage Cracks Sealed at Wastewater Treatment Plant

Introduction:

In wastewater treatment plants, maintaining the integrity of concrete structures is crucial for safe and efficient operations. Shrinkage cracks, especially around pipe penetrations, are common but problematic, leading to water infiltration, contamination risks, and structural deterioration. These cracks compromise the durability and safety of facilities, resulting in increased maintenance costs and potential environmental hazards.

Addressing shrinkage cracks requires specialized solutions that comply with stringent safety standards, particularly for structures in contact with potable water. SealBoss’s advanced polyurethane injection systems are designed to effectively seal these cracks, preventing water seepage and ensuring long-term structural integrity. By forming a closed-cell foam upon contact with water, these systems provide a durable barrier against leaks and contaminants.

This article explores the causes of shrinkage cracks, their implications for wastewater infrastructure, and innovative NSF-certified sealing methods that enhance durability and operational safety.

Understanding Shrinkage Cracks in Concrete

What are Shrinkage Cracks?

Shrinkage cracks are a natural occurrence in concrete structures that form during the curing and drying process. Concrete, a blend of cement, aggregate, and water, undergoes a volume reduction, or shrinkage, as the water used in the mix evaporates. This process of evaporation causes the concrete mass to shrink and contract.

Simultaneously, the internal reinforcements or sub-bases that the concrete is poured onto restrict this shrinkage. This restriction generates tensile stresses within the concrete. When these stresses exceed the concrete’s tensile strength, they give rise to drying and shrinkage-related cracks.

Shrinkage cracks, although often very small, are of significant concern in certain structures. Even though they typically don’t compromise the structural integrity of the concrete, they can create pathways for water and other corrosive materials. This is particularly crucial in structures like dams, where minor leaks can have substantial implications.

Moreover, it’s important to note that the shrinkage of concrete and the subsequent development of cracks is an irreversible process. Therefore, any resulting water leakage needs to be addressed with suitable methods such as concrete crack injection.

Effective Sealing of Shrinkage Cracks at a Wastewater Treatment Plant

Scope

At the wastewater treatment plant in Salina, Kansas, leaks were detected around pipe penetrations and shrinkage cracks in the concrete structure during testing. These leaks posed a challenge that needed to be resolved before installing pumps and pipes in the pump room.

Procedure

To address the issue, a Regional Technical Sales Manager from SealBoss conducted an on-site consultation, recommending the use of SealBoss 1510 Water Stop Foam. This hydrophobic polyurethane resin is designed to expand upon contact with water, forming a closed-cell foam that effectively seals shrinkage cracks and prevents water penetration.

The application involved a high-pressure injection process using the SealBoss P2002 injection system, paired with SealBoss 13-100 AL series injection packers. These packers are ribbed to withstand the high pressure of the injection, ensuring a reliable and durable seal. This approach provided a robust solution for sealing the leaks and protecting the integrity of the concrete structure.

Comprehensive Approach

The combination of on-site consultation, high-quality materials, and specialized equipment highlights SealBoss’s commitment to delivering effective and long-lasting solutions for infrastructure maintenance. The successful application at the Salina wastewater treatment plant is a testament to the effectiveness of SealBoss’s comprehensive approach to concrete repair and waterproofing.

Employed Products:

SealBoss 1510 superior penetration through hairline cracks

SealBoss ® 1510 NSF Approved Water Stop Foam

Shrinkage cracks around pipe penetrations are a common issue in wastewater treatment plants, leading to water seepage from tanks and basins. These leaks pose operational and maintenance challenges and require solutions that comply with strict safety and environmental standards.

SealBoss 1510 Water Stop Foam is a hydrophobic polyurethane resin specially designed to address these issues. Upon contact with water, it expands into a closed-cell, semi-flexible foam that effectively seals cracks and stops leaks. This product is NSF/ANSI/CAN 61 certified, making it safe for contact with drinking water. Its chemical-resistant properties and adjustable reaction times provide contractors with flexibility and long-term reliability, even in challenging environmental conditions.

The NSF/ANSI/CAN 61 certification ensures that SealBoss 1510 meets the highest safety standards for drinking water contact. This certification is vital for projects involving water treatment plants, containment structures, and other systems where water safety is a priority. It guarantees that the product will not leach harmful contaminants into the water supply, safeguarding public health and complying with regulatory requirements.

SealBoss is committed to providing safe and effective waterproofing solutions. With a history of serving the industry since 1988, SealBoss products are trusted by contractors, architects, and engineers worldwide. Our Full System Solutions include a comprehensive range of injection accessories, ensuring seamless integration and support throughout every stage of the injection process.

By choosing SealBoss®, you gain access to high-quality, certified materials and reliable technical support from a single, dependable source. This commitment to safety, durability, and efficiency makes SealBoss 1510 Water Stop Foam an essential choice for infrastructure repair and maintenance.

Related Super Low Viscosity SealBoss Chemical Injection Grouts:

SealBoss ® 1403 SLV Super Low Viscosity Polyurethane Resin for injection into very fine cracks.
SealBoss ® 2400 SealGel SLV Super Low Viscosity Acrylate Gel / Acrylic Gel for injection into very fine cracks.

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Injection Brochure

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Cracks

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Polyurethane Foam Injection

Introduction:

Polyurethane foam injection has become a cornerstone technique in concrete repair and waterproofing, offering unmatched flexibility, durability, and efficiency. This innovative method seals cracks, stabilizes foundations, and protects below-grade structures from water intrusion—all without the need for invasive excavation. In this article, we explore the intricacies of polyurethane foam injection, from its applications and benefits to the step-by-step process and comparison with other repair methods, providing a comprehensive guide for industry professionals seeking reliable and long-lasting solutions.

Polyurethane Foam Injection: The Definitive Guide to Concrete Repair and Waterproofing

Polyurethane foam injection for crack repair and soil treatment has revolutionized the field of concrete repair and waterproofing, offering reliable and long-lasting solutions for a wide range of structural problems. This advanced technique effectively seals cracks, stabilizes foundations, and prevents water intrusion, making it a preferred choice among industry professionals. This comprehensive guide will delve into the key aspects of polyurethane foam crack injection, its applications, benefits, processes, and how it compares to other crack repair methods.

Polyurethane Foam Injection Systems and Applications

1. Understanding Polyurethane Foam Crack Injection and soil Injection Treatments

Polyurethane foam crack injection involves injecting a reactive foam into cracks, voids, or joints in concrete structures. The polyurethane resin expands upon contact with water, forming a flexible, closed-cell foam that seals leaks and prevents water from entering the structure. This method is particularly effective for below-grade waterproofing, foundation crack sealing, and repairing structural cracks caused by settlement, shrinkage, or hydrostatic pressure.

2. Key Applications of Polyurethane Grout Injection

Polyurethane foam injection is versatile and suitable for a variety of applications in both residential and commercial settings:

Foundation Crack Sealing: Polyurethane injection effectively seals foundation cracks, preventing water infiltration and reinforcing structural integrity. It addresses cracks caused by settlement, shifting, or external water pressure, ensuring a long-lasting repair.
Basement Waterproofing Injection: This technique is ideal for waterproofing basements by sealing cracks and joints in foundation walls and floors. Polyurethane foam injection creates a watertight barrier, preventing water seepage and protecting the interior from moisture damage.
Curtain Wall Grouting: Curtain wall grouting involves injecting polyurethane foam behind the structure, creating a water barrier on the positive side. This method is highly effective for large-scale waterproofing projects, such as tunnels, retaining walls, and below-grade structures.
Bladder Injection Method: In the bladder injection method, foam is injected into voids and gaps behind concrete walls, forming a bladder-like seal that blocks water intrusion. This technique is especially useful in areas with high hydrostatic pressure.
Slab Lifting and Stabilization: Polyurethane injection is also used to lift and stabilize uneven slabs. Known as slab jacking, the expanding foam fills voids under the concrete, restoring stability and levelness without the need for extensive excavation.

3. Types of Polyurethane Foam for Crack Injection

Polyurethane foams used in crack injection are categorized based on their properties and applications:

Hydrophobic Polyurethane: Hydrophobic foams repel water and are ideal for sealing large cracks and voids. They expand minimally, providing a dense and durable seal without absorbing moisture.
Hydrophilic Polyurethane: Hydrophilic foams absorb water and expand significantly upon contact, making them suitable for sealing fine cracks and creating flexible seals in dynamic environments. These foams are particularly useful in curtain wall and bladder injection applications where thorough penetration is required.

4. The Injection Process: Step-by-Step Overview

The polyurethane foam crack injection process is a systematic approach that ensures effective sealing and waterproofing:

Surface Preparation: The area around the crack is cleaned to remove debris, dust, and loose particles, ensuring optimal adhesion of the foam.
Crack Evaluation and Drilling: The crack is assessed to determine its size, condition, and water activity. Holes are drilled at regular intervals along the crack to allow for the installation of injection packers.
Installation of Injection Packers: Packers are inserted into the drilled holes, providing a secure entry point for the foam injection.
Injection of Polyurethane Foam: Polyurethane resin is injected through the packers under controlled pressure. The foam expands within the crack, filling all voids and creating a watertight seal.
Curing and Final Inspection: The foam begins to cure immediately, expanding to fill the entire crack. A final inspection ensures that the crack is fully sealed and no voids remain.

5. Advantages of Polyurethane Foam Injection

Polyurethane foam injection offers numerous advantages over traditional crack repair methods, making it a preferred choice for professionals:

Flexibility and Adaptability: Unlike rigid materials, polyurethane foam remains flexible after curing, allowing it to accommodate minor structural movements without compromising the seal.
Water Resistance: Polyurethane’s hydrophobic properties ensure that the foam repels water, maintaining its integrity even in wet conditions.
Minimal Disruption: The injection process can be performed from the inside, avoiding the need for extensive excavation or structural modifications.
Quick and Efficient: Polyurethane injection is relatively fast, often completed within a few hours, minimizing downtime and disruption.
Long-Lasting Solution: The foam creates a permanent seal that resists environmental factors, unlike patches or surface applications that often fail over time.

6. Comparative Analysis: Polyurethane vs. Other Crack Repair Methods

Polyurethane foam injection is often compared to other crack repair methods, such as epoxy injection and hydraulic cement patching:

Epoxy Injection: While epoxy is strong and ideal for structural repairs, it lacks the flexibility needed for dynamic environments. Epoxy also requires dry conditions, limiting its effectiveness in actively leaking or wet cracks. Polyurethane, by contrast, excels in both wet and dynamic conditions.
Hydraulic Cement Patching: Hydraulic cement requires chiseling out the crack into a vee-notch, which is labor-intensive and often fails over time due to poor adhesion. In contrast, polyurethane fully penetrates the crack and bonds tightly to the surrounding concrete, providing a more reliable and permanent solution.

7. Equipment and Tools for Polyurethane Injection

Successful polyurethane crack injection relies on specialized equipment designed for precise and controlled application:

Injection Packers: These are installed in drilled holes along the crack and serve as entry points for the foam. Packers can be mechanical or hammer-in types, depending on the pressure requirements of the injection.
Injection Guns and Pumps: High-pressure pumps deliver the polyurethane resin into the cracks. These pumps can be adjusted based on the size and complexity of the crack, ensuring efficient foam distribution.
Mixing Systems: Some polyurethane foams require precise mixing of components before injection. Advanced mixing gear maintains correct ratios, enhancing the performance and consistency of the foam.

8. Safety Considerations and Environmental Impact

Handling polyurethane foams requires strict adherence to safety protocols to protect workers and the environment:

Protective Gear: Operators must wear gloves, goggles, and respirators to minimize exposure to chemicals during the injection process.
Proper Ventilation: Even though high quality foams do not contain VOC`s or solvents, adequate ventilation is necessary to disperse any fumes generated during the injection, especially in enclosed spaces.
Eco-Friendly Options: Environmentally friendly polyurethane foams are available, minimizing the impact on the surrounding ecosystem. Responsible disposal of waste materials and adherence to environmental standards contribute to a sustainable injection process.

9. Innovative Uses and Future Developments in Polyurethane Injection

Polyurethane foam injection continues to evolve, finding innovative applications beyond traditional concrete repair:

Industrial Applications: Polyurethane is used to stabilize machinery pads, fill voids around pipelines, and reinforce infrastructure in industrial settings, demonstrating its versatility.
Geotechnical Solutions: Polyurethane is ideal for stabilizing soil, filling voids, and preventing erosion around underground utilities, aligning with sustainability goals.
Ongoing Research: Continuous advancements in polyurethane technology focus on improving performance, reducing curing times, and enhancing environmental sustainability.

10. Cost Analysis and Economic Benefits

Understanding the costs associated with polyurethane injection is essential for making informed decisions:

Direct Costs: The direct costs of polyurethane injection include materials, labor, and equipment. While these costs can be higher compared to simpler methods like patching, the long-term benefits in most scenarios outweigh the initial investment.
Low Indirect Costs: Polyurethane injection typically requires minimal service interruptions, reducing indirect costs related to downtime and additional repairs.

11. Addressing Common Challenges and FAQs

Below are common questions and concerns related to polyurethane foam injection:

Can polyurethane injection be used in all crack types?
While highly versatile, polyurethane is best suited for non-structural and waterproofing applications. For structural repairs, epoxy may still be preferred due to its strength. Read our comprehensive Epoxy vs Polyurethane comparison here.
How does polyurethane perform in extremely wet conditions?
Polyurethane foam excels in wet conditions, particularly hydrophilic variants that react and expand upon water contact, ensuring thorough sealing even in high-moisture environments.
What are the potential downsides?
There are few downsides to polyurethane foam injection. Quality product paired with proven equipment and a professional and experienced contractor is the best foundation for quick and lasting repair. The primary concerns with polyurethane injection are related to proper mixing and injection techniques. Incorrect procedures can lead to incomplete seals or incomplete penetration / expansion, emphasizing the need for skilled application and suitable equipment.
Is polyurethane injection a permanent solution?
Yes, when properly applied, polyurethane injection provides a permanent seal. Its flexible and inert nature allows it to adjust to minor structural movements, as well as temperature related expansion and contraction cycles, preventing future water intrusion.

Conclusion

Polyurethane foam crack injection is a cutting-edge technique that provides durable, flexible, and efficient solutions for concrete crack repair and waterproofing. Its adaptability to various conditions, combined with minimal disruption and long-lasting results, makes it a standout choice for professionals seeking reliable methods to address structural and water infiltration issues. As the industry continues to advance, polyurethane foam injection will remain at the forefront of innovative concrete repair technologies, setting the standard for effective and sustainable building maintenance.

For more information on our products and services contact our expert team today!

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PU Foam Injection Systems

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Flexible Injection Foam Grout For Moving Structures

SealBoss ® 1570 – The Very Flexible Injection Foam

Moving Structures
Crack Injection Foam
Water Stop Foam
Leak-Seal Chemical Grout
NSF Drinking Water Contact Foam

SealBoss 1570 Water Stop Foam, combined with SealBoss 15x Accelerator, constitutes a hydrophobic water-activated and hydroactive grout solution. This innovative blend serves as a water cut-off and foam seal grout, grounded in MDI polyurethane technology. Notably, this resin boasts a solvent-free formulation and is entirely composed of 100% solids.

Today I like to talk our “Flexible Injection Foam Grout For Moving Structures” – SealBoss 1570

Let us discuss how SealBoss 1570 Flexible Foam is different from our flagship versatile chemical grout SealBoss 1510.

The highlight of SealBoss 1570 are the outstanding elongation and compression properties which make it a very flexible product with a bounce back performance similar to a memory foam.

SealBoss 1570 is the product of choice for environments where you expect oscillation, vibration, movement and compression.

1570 flexible water stop foam uses the standard accelerator SealBoss 15X and the liquid properties and reactive features are similar to SealBoss 1510 which make switching between products very easy and convenient.

Inquire more about 1570 Flexible Water Stop Foam when you call us here at SealBoss. Your representative will be happy to help you out.

Chris Coderre

Regional Sales Manager

SealBoss ® 1570

Leak-Seal Foam Grout
Water Stop Foam Grout
Hydrophobic Injection Foam

Flexible Polyurethane Injection Foam
Flexible Foam, Water-Activated chemical grout. Water activated hydrophobic flexible polyurethane foam, expands up to 20-30 times after contact. Seals cracks, expansion joints and stops water flow. Gel-time is accelerator-adjustable. Drinking Water Contact meets NSF/ANSI 61 Section 5 requirements.

Contact Your SealBoss ® Technician

Historical Building Repair – PUR Injection

Historical
Building
Repair

PUR
Foam
Injection

Historical Building Repair – PUR Injection

This well over a century old historical apartment building had persistent water intrusion through the masonry rock foundation into the below grade parking garage.

A SealBoss Technician was asked to come out and consult with a local installer in St. Louis, Missouri, to find solutions for the water ingress problem. The majority of the exterior walls where the sill plate sits at or just below grade had shows signs equivalent to years of water intrusion.

The century old stone wall, and the grout holding the natural rocks in place, had become compromised. Water would seep from the soil through the wall causing further decay, unsightly stains and in some areas growth of unsightly algae.

Previous non-permanent and haphazard repairs included cleaning the wall and opening up the face with a grinder then applying a cementitious grout over the whole face of the wall. This attempt of a repair would fail within a year of application.

The approach to a permanent historical building repair was to inject any visible cracks first. One of the areas with heavy water intrusion was a doorway that lead from the parking garage to the stairs leading to the domicile. Here there was a water bearing crack with an active leak overhead as well as a cold joint between the floor and stub wall.

The overhead crack was addressed using 5/8” Plastic Injection Ports as the grout lines would crack and flake when a mechanical packer was tried initially. A zerk tip was added to the injection port and the crack was primed by injecting water through the packer till positive refusal was seen from the crack.

SealBoss 1510 Chemical Injection Grout was then injected under pressure to displace any water in the crack and began to cure and seal the area.

To address the cold joint on the floor in the stairwell, ½” packers were installed on the floor roughly one foot apart and six inches from the wall. It was confirmed that behind the stub wall in the stairwell was substrate and upon install of the Packers, it was found that the floor had only been about a two inch pour.

With the thin floor slab, it was advised to inject through the slab creating a “blanket” of 1510 below the slab since the slab thickness would not allow for the standard 1, 2, 3, 45 Degree Injection Packer Placement Method.

A weep hole was also drilled in the slab to allow for a controlled point where the water and off gas could be directed. Positive refusal of the foam was visible from the cold joint, and once the joint had been sealed, packers were removed and a hydraulic cement patch was installed.

Once all cracks have been addressed, wet areas can be addressed by curtain / bladder injection, where chemical grout is injected behind the wall to create a waterproofing barrier between the soil and the wall on the positive side of the structure.

More on curtain injection grouting method – details and pictures.

Historical Building Repair – Chemical Grouting Products Used

Call Your SealBoss Historical Building Repair and Injection Grouting Specialist

If you have any questions on chemical injection grouting or any related applications, please contact our team of qualified SealBoss grouting repair representatives to schedule an on site consultation & full systems training.

Call us at 714-662-4445.

Historical Building Repair Systems

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SB Repair

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Injection Grout SealBoss 1510 Versatile PUR Foam

SealBoss 1510
Original Water Stop Foam

The Most Versatile Injection Grout

Crack Injection Foam
Water Stop Foam
Leak Sealing Foam
Concrete Repair Foam
Void Fill Foam / Filling Voids under Concrete Slabs
Curtain / Bladder Injection Grout
Soil Stabilization Grout
Hydrophobic Moisture Inert Structure
Hairline Crack Seal Foam
NSF Drinking Water Contact Foam

Best Product for Stopping Water Leaks

Injection Grout SealBoss 1510 Versatile PUR Foam – in short known as 1510 Water Stop Foam – is our most versatile and best-selling chemical injection grout for stopping water leaks in most crack injection situations.

SealBoss 1510 mixed with 15x Accelerator is a hydrophobic water-activated, hydro-active water cut-off grout and foam seal grout based on a MDI polyurethane. The resin is 100% solvent free and 100% solids.

SealBoss ® 1510 Water Stop Foam Advantages:

NSF / ANSI 61 Certified Drinking Water Contact
Advanced Formulation
Up to 40 Times Expansion
SealBoss ® Product-Pump-Packer System Solution
Unregulated For Transport
Advanced Solvent Free MDI Formulation
This Product is for Professional Use

1510 Water Stop Foam is our flagship injection grout resin and best-selling product for stopping water leaks in most circumstances. It is versatile and does a lot of different things but let me just touch on some of the highlights.

1510 polyurethane leak-seal foam can be used as your base for all things crack injection where you got running water coming through cracks in concrete structures.

Those cracks can vary in width anywhere from barely a hairline visible up to about half inch to sometimes even three-quarters after that you might want to employ Seal Oakum (Oakum Soakum Method) which we talked about in our video.

1510 injection resin can also be used as a soil stabilizer with a low percentage of the SealBoss 15x accelerator in a soil stabilization scenario where you need to get deep down into the earth and and solidify any loose soil and gravel pockets that you may have. The product can also be used in support of excavation or even tunneling or boring.

1510 Water Stop Foam can also be used in curtain injection scenarios where 1510 is injected behind walls to create a curtain or bladder and underneath slabs which is, because of the horizontal orientation, referred to as blanket injection.

Inquire more about 1510 when you call us here at SealBoss. Your representative will be happy to help you out.

SealBoss Versatile Injection Grouts

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Hairline Crack Injection

Super Fine Crack Injection

What are Hairline Cracks and how do they develop?

Fine cracks in concrete, thinner than a credit card thickness, are considered hairline cracks. here are a number of reasons concrete structures could form hairline cracks.

Common causes of hairline cracks in concrete structures and foundations

Shrinkage
Concrete shrinks in volume as it dries. During this process of contraction, hairline cracks may develop.

Thermal Movement
Concrete expands and contracts during temperature changes. This process can cause hairline cracks to form in the structure.

Settlement
Foundation settlement can cause stress in a structure and lead to cracking. Voids varying in size from hairline cracks to more severe fractures and fissures can be observed.

Hairline Crack Injection Job Walk Comments

– In the image presented, we highlight a detail we have previously discussed with the injection team during technical training. The almost imperceptible hairline crack beautifully demonstrates the resin’s travel, moving from the drilled hole pointy of injection within the crack and emerging on the wall’s surface.

For effectively treating ultra-thin hairline cracks, it is advisable to utilize a low-viscosity chemical injection grout. This ensures optimal material penetration within the structure. Additionally, injection packers are typically positioned in close proximity to one another and nearer to the crack. This arrangement is due to the anticipated higher injection pressures and the increased challenges associated with material dispersion.

Hairline Crack Injection Products Used

The contractor performed the hairline crack injection with the SealBoss Injection System.

Products used:

We also recommend for hairline crack injection:

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