SealBoss News / Blog

Irrigation District Canal Sealing

Injection Technologies for Irrigation District Canal Sealing

Introduction:

Irrigation canals are the lifelines of agriculture, channeling water across vast landscapes to nourish crops and sustain farming operations. Yet, the integrity of these canals is under constant threat from leaks and seepage, challenges that not only compromise water efficiency but also the very foundation of our agricultural infrastructure. In response to these challenges, innovative solutions such as polyurethane grout injection and grout-impregnated oakum applications have emerged as effective methods for canal sealing and repair.

Polyurethane grouts, oakum, and injection lance technologies represent significant advancements in the sealing and maintenance of irrigation district canals, addressing both traditional challenges and modern needs.

Polyurethane grout, with its expansive properties, offers a dynamic solution by filling cracks and voids with a durable foam that cures into a watertight seal, reinforcing the structural integrity of canals and minimizing water loss.

Oakum, a fibrous material impregnated with grout, provides a versatile and environmentally friendly option for sealing irregular or wide cracks, combining the resilience of natural fibers with the sealing power of modern grout.

The injection lance technique, used in both curtain and probe grouting, allows for precise application of materials, targeting specific seepage paths and ensuring a comprehensive barrier against water loss. Together, these methods enhance the efficiency of water delivery systems, safeguard the structural stability of irrigation canals, and contribute to the sustainability of agricultural practices by conserving water and reducing maintenance costs.

Polymer Grout Systems for Irrigation District Canal Sealing

The Challenge of Leaking Canals

The network of irrigation canals that crisscross agricultural regions is vast and complex. Managed by various entities, including the Bureau of Reclamation, this infrastructure spans thousands of miles and is crucial for the delivery of water to farmlands. However, the aging of these canals, combined with natural and mechanical damages, presents a continuous battle against leaks and seepage. Such issues not only lead to water loss but also pose significant risks to the structural integrity of canals, potentially resulting in erosion, sinkholes, and even catastrophic breaches that can have far-reaching impacts on agriculture and nearby communities.

Advanced Solutions for Irrigation District Canal Sealing

Polyurethane Grout Injection

Polyurethane grout injection stands out as a modern solution for addressing irrigation canal leaks. This method involves injecting a liquid polymer, which expands upon contact with moisture, into cracks and voids, thereby creating a durable, watertight seal. The rapid curing time of polyurethane grout minimizes downtime in water delivery, and its flexibility allows the structure to accommodate future movements, significantly reducing the likelihood of recurrent leaks.

Using NSF Drinking Water Contact Certified Polyurethanes

NSF-approved polyurethane grouts are essential in irrigation canal sealing because they meet stringent safety standards by the National Sanitation Foundation (NSF) and the American National Standards Institute (ANSI). This certification ensures these materials are safe for use in environments in contact with potable water, preventing contamination. SealBoss NSF/ANSI/CAN 61 Certified Products undergo rigorous testing to ensure they do not leach harmful contaminants, making them a reliable choice for maintaining the purity of water systems and complying with regulatory requirements for public health and environmental protection.

Addressing Seepage with Curtain and Probe Grouting

In addition to direct crack sealing, addressing pervasive seepage is critical for maintaining the functionality and integrity of irrigation canals. Techniques such as curtain and probe grouting play a crucial role in this context. Curtain grouting involves creating a grout barrier along the canals wall to block water pathways into the soil, while probe grouting with injection lances targets specific seepage paths, allowing for precise application and minimal environmental disturbance.

Steel Injection Lances, tailored for specialty grouting applications, facilitate the delivery of various polymer solutions directly into the soil. Their primary function is to inject these polymers deep into the soil to enhance its properties. By doing so, they significantly increase the soil’s strength, decrease its permeability, and improve its overall stability, making them indispensable tools for polymer leak sealing and soil stabilization efforts.

Sealing Joints in Concrete Canals

Concrete-lined canals face the challenge of leaking panel joints. SealBoss 1510 Water Stop Foam, used in conjunction with SealBoss Oakum, provides an effective solution for sealing these joints. The combination of these materials forms a water-impermeable barrier, ensuring the longevity and functionality of lined canal systems.

Grout-Impregnated Oakum

Grout-impregnated oakum represents a blend of traditional and modern repair techniques. Utilizing SealBoss Oakum—a fibrous material derived from old hemp ropes—saturated with specially formulated grout, this method can effectively be used to seal wider cracks and seals cracks and joints in irrigation canals. The natural flexibility of oakum, combined with the strength of the grout, offers a resilient barrier against water seepage, making it especially suitable to seal irregular and wide cracks, as well as leaking joints.

Soil Cavity Filling and Sealing

The stability and functionality of irrigation canals are compromised not only by the effects of soil erosion and washouts but also by the presence of wildlife, which presents unique and significant challenges.

Animals like gophers, muskrats, and beavers can create tunnels and burrows in canal berms, potentially leading to significant water loss and instability. Sealing these wildlife burrows with quick expanding SealBoss polyurethane foam grout not only prevents water leakage but also deters animals from re-establishing their burrows, thereby protecting the canal and adjacent agricultural lands from unintended water damage.

The Importance of Professional Expertise

While some maintenance tasks pertaining irrigation district canal sealing can be handled through do-it-yourself approaches, the complexity of canal repair often necessitates professional expertise. Companies like SealBoss offer comprehensive guidance and technical support tailored to the unique challenges of canal maintenance. Their referrals to experienced contractors ensure that repair projects are executed effectively, safeguarding this critical infrastructure against the myriad challenges it faces.

Conclusion

The sustainability of our agricultural system relies heavily on the integrity of irrigation canals. Through the application of advanced sealing techniques and materials, combined with professional expertise, we can ensure the efficient delivery of water to farmlands, preserving the foundation of agricultural productivity and environmental stewardship for future generations.

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Utility Vault Leak Sealing Repair

Injection Technology for Utility Vault Repair and Maintenance

Introduction:

Utility vaults, integral components of modern infrastructure, house essential services like electrical and telecommunications equipment. Despite their robust construction, they are prone to leaks, especially at precast joints and pipe penetrations. Neglecting these leaks can lead to operational, safety, and financial challenges. This comprehensive guide delves into the intricacies of utility vault leak sealing repair, emphasizing the application of polyurethane grout for long-lasting solutions.

Advantages of Polymer Grout Injection for Utility Vault Leak Sealing Repair

Polyurethane grouts stand out for their material longevity and flexibility after curing, accommodating structural shifts and reducing the likelihood of cracks. Economically, it requires fewer reapplications and offers reduced labor costs, making it a cost-effective choice in the long run. Environmentally, SealBoss’s NSF-certified polyurethane grouts meet stringent public health and safety standards, ensuring minimal impact on the environment.

Acrylate / acrylic gel injection resins offer extreme penetration properties and super low viscosity and are used for permeation and curtain injection while providing a sealing membrane in blow grade structures between the concrete and surrounding soil.

Utility Vault Leak Sealing Repair

Ensuring Structural Integrity and Operational Efficiency

The Consequences of Ignoring Leaks

Unaddressed leaks in utility vaults can lead to equipment corrosion, failure, or increased maintenance needs, affecting the reliability of utility services. Moreover, water in electrical vaults creates a hazardous environment, increasing the risk of electrical short circuits and posing a safety threat to maintenance staff.

The Solution: Polymer Grout

Polyurethane grout, with various physical properties and reaction profiles, including hydrophobic and hydrophilic formulations, offer highly specialized solutions and a professional approach to sealing leaks in utility vaults permanently. On large and damp concrete walls of damp acrylate / acrylic gel injection may be the application method of choice.

Polymer grout injection most often outperforms traditional methods like cementitious grouting by accommodating structural movements, active high velocity water flow, and preventing leak reoccurrence.

Sealing General Leaks and Leaking Cracks

Leaks can occur due to a variety of reasons including poor construction, soil movement, and aging materials. Cracks in the walls or floor of the vault can develop over time, leading to water ingress.

Crack Injection Method

Crack injection is a precise technique used to address leaking cracks. This method involves injecting a sealing material, typically a polyurethane (or sometimes epoxy resin), into the cracks to create a waterproof barrier.

For the Comprehensive SealBoss Crack Injection Guideline click here.

Steps for Crack Injection:

Identifying and Cleaning the Crack: The first step is to thoroughly inspect the utility vault and identify all the cracks. These cracks need to be cleaned to remove any debris or contaminants.
Installing Injection Ports: Small injection ports are then installed along the crack at regular intervals. These ports will serve as entry points for the injection material.
Injecting the Resin: The selected resin is then injected into the ports, starting from the lowest port and moving upwards. The resin fills the crack completely, creating a waterproof barrier.
Curing and Finishing: Once the injection is complete, the resin is allowed to cure. After curing, the injection ports are removed, and the surface is finished as required.

Sealing Damp Walls with Curtain Injection Technique

Damp wall and water seepage with very fine cracks or no visible cracks. This issue is typically due to water seeping through the walls, which can be a result of groundwater pressure, capillary action and porous substrate.

Curtain injection is an effective method for addressing general leaks and damp walls. It involves creating a waterproof barrier behind or around the leaking area. Curtain injection is performed with SealBoss polyurethane grouts or SealBoss 2400 acrylate/acrylic gel resin.

Read more on the Curtain Injection Technique – click here.

Steps for Curtain Injection

Assessment of the Leaking Area: A thorough assessment is conducted to determine the extent and source of the leaks or dampness.
Drilling Injection Holes in Grid Pattern: Holes are drilled into the wall or ceiling at strategic locations to cover the area affected by the leaks or dampness.
Injecting the Grout: A low-viscosity polyurethane grout is injected into these holes. The grout travels through the voids and cracks behind the wall or ceiling, forming a curtain-like barrier.
Creating the Waterproof Barrier: The grout permeates and creates a curtain or bladder, sealing off the water paths and creating a waterproof barrier.
Curing and Inspection: After the injection, the grout is given time to cure. A final inspection is conducted to ensure the effectiveness of the barrier. Curtain injection can often be tested by flooding the area behind the structure.

The Water Migration Problem of Precast Joints and Pipe Penetrations

Precast joints in utility vaults, formed at the junctions between concrete sections, are susceptible to leaks due to cracks, soil shifts or temperature fluctuation caused movement.

Similarly, pipe and conduit penetrations, where utility lines enter the vault, can become leak points. The original sealing around these areas can degrade over time, allowing water to infiltrate the vault.

Repairing Precast Joint Leaks

For precast joint leaks, products like SealBoss 1510 and SealBoss 1570, combined with SealBoss Oakum, offer effective solutions. SealBoss 1570 is a highly flexible polyurethane grout that adapts to movements between concrete sections, while SealBoss Oakum, a special oil-free dry jute rope, helps to seal large and irregular defects when used in combination with the grout.

Installation Guideline

Clean and moisten surfaces before applying Oakum
Saturate SealBoss Oakum with SealBoss Polyurethane Resin
Pack the Oakum into the precast joint and, if necessary, inject additional resin for a complete seal.
Allow the material to cure overnight

Addressing Pipe Penetration Leaks

For pipe penetration leaks, a combination of SealBoss Polyurethane grout and SealBoss Oakum can create a durable seal. Soaking SealBoss Oakum in the grout and then packing it around the pipe forms a tightly sealed gasket.

Installation Guideline

Soak SealBoss Oakum in SealBoss Polyurethane Grout and water
Pack the soaked Oakum around the pipe
Use a SealBoss Injection Needle to fill any remaining gaps with chemical grout

This method offers longevity, with the potential to last up to five decades.

Selecting a Qualified Contractor

The effectiveness of the repair largely depends on the skill of the contractor. It is crucial to choose a contractor experienced in applying polymer grout. Look for contractors who have received training from the material manufacturer and have a proven track record in polymer water stop injection and leak sealing projects.

Evaluating Proposals

When reviewing proposals, focus on the detailed scope of work, proposed materials, cost breakdown, project timeline, and references. This due diligence ensures that your investment in utility vault leak sealing is well-placed.

Conclusion

Utility vault leak sealing repair, particularly with polymer grouts and resins, is an essential aspect of maintaining infrastructure integrity. Choosing the right contractor and using quality products like those offered by SealBoss can ensure the longevity and effectiveness of the repairs. By addressing these leaks proactively, you can mitigate operational challenges, ensure safety, and avoid negative economic impacts.

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Parking Garage Waterproofing

Injection Technology for Parking Garage Infrastructure Maintenance

Introduction:

Below-grade parking garages and above-grade garages are vital components in urban infrastructures, particularly in densely populated areas where surface parking is scarce. These garages provide a crucial solution for parking needs but are inherently prone to water leaks, leading to serious structural integrity issues.

Commercial parking garages, whether situated above or below ground, face a significant risk of water damage. The primary construction material, concrete, is naturally prone to developing shrinkage and stress cracks over time. Additionally, concrete’s porous nature, combined with the existence of construction and cold joints, creates potential pathways for water to penetrate. This infiltration of water can trigger various issues, notably the weakening of the concrete structure and the corrosion of embedded steel reinforcement bars (rebar).

Such deterioration not only compromises the structural integrity of the garage but also leads to escalated maintenance needs and potential safety hazards.

The consequences of such leaks and deterioration extend beyond mere inconvenience, posing safety risks, incurring costly repairs, and diminishing property values.

This article outlines common challenges of waterproofing these above-grade and subterranean structures, outlining the detrimental effects of water on concrete, strategies for early detection of structural compromises, and both immediate and long-term actions for maintaining the structural integrity and safety of these essential facilities.

Polymer Grout Injection Water Stop: The Final Line of Defense

Polyurethane grout injection plays a crucial role in parking garage waterproofing, especially in areas prone to leaks. This material provides a robust solution for sealing and protecting against water infiltration. When integrated into maintenance plans, it acts as a formidable barrier against moisture-related damages.

Polymer polyurethane and acrylate grouting include multiple repair techniques such as:

Crack Injection
Joint Injection
Conduit & Pipe Penetration Sealing
Curtain Wall Grouting
Soil permeation, compaction, consolidation, and stabilization grouting

Polymer Grout for Parking Structure Waterproofing

The Detrimental Effects of Water on Concrete Structures

Water migration in concrete parking garages can lead to corrosion, compromising the structural strength of the concrete, increasing the likelihood of further cracking, spalling, and in severe cases, complete structural failure. These issues not only present significant safety hazards but also accelerate the need for increasingly extensive repairs.

Recognizing the Signs of Structural Compromise

Early detection of water-related damage is critical for the longevity of parking structures. Key indicators include cracking, spalling, efflorescence (a greyish white, powdery substance indicating water movement within concrete), and rust stains on concrete surfaces. These signs point to potential rebar corrosion and overall weakening of the concrete structure.

Immediate and Long-Term Waterproofing Actions

Effective waterproofing requires both immediate interventions and long-term strategies.

Immediate actions often include sealing leaks with polyurethane polymer grout or acrylate grout injection and allowing for additional drainage to prevent water accumulation.

Long-term measures involve regular structural inspections and the development of comprehensive maintenance plans, encompassing routine cleaning of drains and re-application of waterproofing materials.

Protecting Investment and Public Safety

The integrity of below-grade parking garages is crucial for the safety of its users and the preservation of asset value. Stakeholders need to understand the impacts of water damage and adopt proactive strategies to mitigate risks. This approach helps extend the lifespan of parking structures, reduces maintenance costs, and ensures a safe, functional environment for users.

Maintenance of Drainage Systems

Effective drainage is paramount in preserving the structural integrity of parking garages. Poor drainage can lead to water ponding, increasing slip-and-fall risks, and accelerating concrete deterioration. Maintaining an efficient drainage system is thus essential for avoiding frequent and costly repairs.

Contractors tasked with improving drainage should focus on optimizing the existing system. This involves evaluating the system’s effectiveness, cleaning drains, removing debris, and recommending a schedule for regular inspections and ongoing maintenance.

While improving drainage systems may require an upfront investment, the long-term benefits, including reduced maintenance costs, structural preservation, minimized safety risks, and enhanced operational efficiency, are substantial.

Combating Corrosion

Water migration of any source, including groundwater, rain water and sprinkler runoff, and environmental factors like minerals and vehicle emissions can significantly corrode concrete and metal components. Polymer grout injection, when correctly applied, effectively seals against these elements, prolonging the garage’s structural integrity.

Cost Considerations and Long-Term Value

Investing in polymer grout application, including hydro-active foam, polymer gels and resins, is cost-effective in the long run, offering benefits such as reduced repair costs, extended lifespan of the garage, enhanced safety, and increased property value.

Complementing Polymer Grout Technology with Other Preventative Measures

A comprehensive corrosion prevention strategy can include additional measures like proper ventilation, regular cleaning, and the application of specialized coatings and sealants, alongside polyurethane grout injection methods.

Regular inspections and proactive maintenance are key to sustained effectiveness in corrosion prevention. Any signs of new corrosion should be promptly addressed to maintain the structure’s integrity.

The Importance of a Comprehensive Corrosion Prevention Strategy

A holistic approach to combating environmental corrosion is essential for the long-term success of waterproofing efforts. This strategy should encompass quality application of polyurethane grout and integration into a broader corrosion prevention plan.

Sealing of Gaps and Spaces Around Electrical Conduits and Pipes

Moisture poses significant risks to electrical systems within parking garages, potentially leading to hazards such as short circuits and electrical fires. Ensuring electrical safety requires a multifaceted approach that can combine polyurethane grout application with other comprehensive safety measures. This strategy is vital for reducing the risks associated with water infiltration.

Polyurethane grout is instrumental in mitigating these risks by effectively sealing areas around electrical installations and sealing of leaking conduits and the sealing of other openings in the structure such as annular spaces and gaps around drainage pipes.

The initial investment in polyurethane grout application for electrical safety and the sealing of conduit and pipe penetrations pays off in the form of reduced maintenance costs, enhanced safety, and operational continuity. Electrical, conduit, and pipe penetration safety in parking garages should include regular inspections and maintenance.

Conclusion

Waterproofing below-grade parking garages is a critical aspect of urban infrastructure maintenance. By understanding the challenges, recognizing the signs of damage, and implementing both immediate and long-term waterproofing strategies, owners and stakeholders can protect their investments, ensure public safety, and maintain the structural integrity of these essential facilities.

Regular maintenance, combined with the strategic use of preventative and repair materials like polyurethane grout, forms the cornerstone of effective waterproofing and corrosion prevention.

For specialized solutions, consulting with the waterproofing experts at SealBoss Corp. is recommended to ensure that your parking garage remains safe, functional, and valuable for years to come.

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SealBoss Seal Oakum & SealBoss 1510

SealBoss Seal Oakum 1500

Sealing Wide Joints with Oakum
San Pedro Pier Port of Los Angeles

SealBoss Seal Oakum: Your Solution to Sealing Large Openings

SealBoss Seal Oakum is an oil-free jute-based fiber of remarkable strength, ready to absorb high volumes of SealBoss 1510 Water Stop Foam. Oakum serves as a conveyance medium for the hydroactive foam resin, making it an effective solution for sealing large gaps.

Impregnated with 1510 Water Stop Foam, SealBoss Seal Oakum reacts upon contact with moisture, expanding to create a flexible yet robust seal. This is especially beneficial in combating active water infiltration in sizable openings, cracks, and joints.

SealBoss Seal Oakum: The Ultimate Remedy for Sealing Vast Gaps and Openings

Discover the strength and versatility of SealBoss Seal Oakum, an innovative, oil-free jute-based fiber system designed for quick and easy waterproofing. This eco-friendly material stands ready to dealing with large, daunting openings. With its remarkable ability to absorb high volumes of SealBoss 1510 Water Stop Foam, SealBoss Seal Oakum serves as an unparalleled conveyance medium, transforming the hydro active foam resin into a water tight barrier against leaks and moisture.

Impregnated with the cutting-edge 1510 Water Stop Foam, SealBoss Seal Oakum springs into action upon encountering moisture. It undergoes an immediate transformation, expanding to form a flexible, yet incredibly durable seal. This unique property makes it an invaluable ally in the battle against active water infiltration, offering a dependable solution for sealing expansive openings, deep-seated cracks, and challenging joints.

Designed for efficiency and ease of use, SealBoss Seal Oakum not only seals but also fortifies structures, providing peace of mind and long-lasting protection. Whether you’re facing the relentless pressure of water ingress or the daunting task of securing large structural gaps, SealBoss Seal Oakum emerges as the definitive solution, ready to tackle tough sealing challenges head-on. Embrace the power of innovation and safeguard your structure with the outstanding sealing capabilities of SealBoss Seal Oakum.

Here’s How You Can Use It

For dry gaps between concrete slab segments, spray resin-saturated oakum with water or immerse it into a water-filled pail to kickstart the activation process. Once reactive, the oakum can be packed into the joints, forming a watertight seal between the concrete substrates.

Installation Guidelines for SealBoss 1500 Seal Oakum

Dip the SealBoss 1500 Seal Oakum into the activated foam resin. Remove it from the container and wipe off any excess material.
If needed, moisten joints or voids with water to prepare the surface for the resin-saturated SealBoss 1500 Seal Oakum.

To seal minor leaks, dip the saturated SealBoss Seal Oakum into water, which initiates the reaction process.

Position the saturated SealBoss Seal Oakum into the joint or void. Optionally, you can hasten the curing process by spraying the saturated oakum surface with water.

After the material has cured, cut away any surplus product from the substrate surface.
Leveraging SealBoss Seal Oakum not only provides an effective solution for sealing wide gaps, but also ensures the durability and longevity of your structures.

Download our Insightful Injection Brochure

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Dam Repair – Active Leaks Sealed

Dam Repair
Active Leaks Sealed

Addressing Dam Leakage

Several factors can play a role in the development of cracks in concrete dams. The natural shrinking of concrete, geological stresses, and inadequate soil compaction during construction all play their part. The persistent positive water pressure means that even the smallest of these cracks and fissures can become avenues for water leaks. As water continues to seep through, the cracks inevitably widen over time, potentially leading to significant water loss and a progressive deterioration of the dam structure.

Earthen dams also face the risk of significant water loss through leakage. The potential culprits are often inadequate compaction of fill dirt, faulty seams, and leaks forming underneath the dam’s breastwork. Seepage can undermine the stability of earthen dams, leading to safety concerns and operational inefficiencies.

As with most structural defects, water leaks will continue to increase until corrective action is taken.

Dam Repair – Sealing Active Leaks

Innovative injection solutions like SealBoss Water Stop Foams and Polyurethane Injection Resins have been utilized for dam repair for over three decades. Successfully used to seal leaks in both concrete and earthen dams, these materials have proven invaluable in enhancing the resilience of dams, preventing water loss, and extending the lifespan of these significant structures.

Sealing Active Leaks – Efficient Dam Repair with Water Stop Foam Injection

SealBoss 1510 Dam Leak Sealing Injection Grout has proven its efficacy at the Blue Heron Paper Mill Dam in Oregon City, Oregon. The procedure involved the use of the SealBoss SLP1C pump and Mechanical Injection Packers to deliver the grout effectively.

Addressing the considerable water infiltration from the Willamette River, the Water Stop Foam was accelerated using the highest recommended dosage of SealBoss 15X Accelerator. This resulted in the fastest setting Water Stop/High Foamer Injection System, tailored to deal swiftly and effectively with the leakage.

The procedure was meticulously executed, with injections performed at strategically chosen entry points. This approach allowed the injection team to cut off the water flow at the primary leak sources, as well as at other sites where seepage was less severe.

Prior to the initiation of the injection process, a technical sales representative from SealBoss, alongside the West Coast SealBoss sales manager, visited the site. Their visit served to clarify injection techniques, address any queries, and ensure the operation proceeded with complete understanding and efficiency.

The operation was successful, with all dam leaks effectively sealed – a testament to the proficiency and coordinated efforts of everyone involved in the operation.

Should you have any questions regarding crack injection water stop procedures or any other injection-related processes, our seasoned team of SealBoss representatives stands ready to assist you. Don’t hesitate to get in touch.

We offer on-site consultations and comprehensive injection systems training, designed to provide a solid understanding of our repair methodologies.

Contact Your SealBoss ® Technician

Sealing Manholes with the SealBoss System

Sealing Manholes
with the SealBoss System

Repairing Leaks in Concrete and Composite Manholes with SealBoss Injection Grout Systems

Concrete manholes have a been a part of the standard sewer infrastructure for decades, composite and fiberglass manholes are an increasingly popular alternative due to their outstanding resistance to many chemicals and sewer gases.

All manholes, no matter of their composition or design, have penetrations and joints which are susceptible to water infiltration.

Injection Repair Grouts for Sealing Manholes

SealBoss 1510 – Original Water Stop Foam – MDI based hydrophobic one component polyurethane grout
It is a gold standard for water stop and leak seal injection product. 1510 is very well suited for sealing manholes with slow and fast moving bodies of water infiltration. The product is activated and controlled with SealBoss 15X Accelerator. ANSI/NSF Drinking Water Contact Certified.
SealBoss 1570 – Flexible Water Stop Foam – MDI based hydrophobic one component polyurethane grout
Extra flexible injection foam for water stop and leak seal injection. The product is activated and controlled with SealBoss 15X Accelerator. ANSI/NSF Drinking Water Contact Certified.

SealBoss FlexGel – MDI based hydrophilic one component flexible polyurethane grout
Flexgel is used for curtain/bladder soil injection located behind leaking structures, to seal cracks and joins. The highly flexible SealBoss ® FlexGel works very well in wet and moving cracks as it works as a flexible bridge between substrates. Depending on the water amount incorporated during reaction the product either forms a flexible foam or a gel. ANSI/NSF Drinking Water Contact Certified.

To fill leaking manhole joints the contractor can soak the Polyurethane grout in SealBoss ® SealOakum to fix the leaking manhole joints. It is also possible to use an open cell backer rod as a medium to soak the product.

These types of municipal jobs can be of large scale and very profitable for the contractor. The SealBoss ® Team is here to assist you, call us now at 714-662-4445.

We supply a complete system to suit your exact injection and waterproofing needs, including a very large packer selection, professional pumps and a comprehensive line of construction chemicals.

See our article “How to Stop Water Inflow & Infiltration — I & I – Repair”

SealBoss Flexgel

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Flexgel

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SealBoss Contractor Training

SealBoss
Contractor Training

Our Technical Sales Managers
enjoy sharing their experience
and knowledge with everyone
in the industry
- worldwide -

Training Australia

We Come to You

We take pride in educating engineers, distributors and contractors worldwide in the use of our products and equipment. If you like more information on the educational services, on-the-job training, and lunch and learns that we can provide, please contact our technical sales staff at 714-662-4445

Contact us for Your Training

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TRAINING

Hollow Core Concrete Slab Water Leak Repair

Hollow Core Concrete Slab Injection

What is a Hollow Core Slab ?

A hollow core concrete slab, also known as a hollow core slab, is a precast slab of prestressed concrete, typically used in the construction of floors in multi-story buildings and parking structures

Parking Garage Repair with SealBoss 1510 Foam Injection

The Problem

The client was experiencing water intrusion through hollow core concrete slabs and along exterior wall and sill plate cold joints in below parking garage causing water to drip onto cars and creating unsightly watermarks on the walls.

A waterproofing contractor was asked to seal the cold joints and cracks in the affected hollow core concrete slabs, and to determine and stop the source of leakage.

The Solution

To address the issue of the leaking hollow core slab, the contractor reached out to the SealBoss Regional Sales Manager to advise on the injection of the hollow core slab.

With a quick walk around the exterior, it was made clear that there were drainage issues where the downspouts fed the run-off onto a grassy area with no sloping to direct the water away from the building.

Once the source of the leak had been determined, a two-step injection strategy was adopted as the best solution. The initial injection was to inject cracks in the hollow core slab where water was leaking out and dripping onto vehicles. The subsequent injection would be to seal off the end caps of the hollow core cells where the leak originated.

Once the contractor began to drill holes for the injection packers, water poured out and it was obvious that the hollow core was completely filled with water. After the water was drained the crack was injected and sealed.

To verify that water had not traveled between cells, weep holes were drilled into the adjacent cells. Water was found to have also filled another cell of the hollow core and had to be drained.

Using a borescope, it was confirmed that there was water intrusion where the hollow core had been capped off with a plastic cap (see video below).

The weep holes were left open to prove that the leak had subsided.

The client was advised to add drainage boxes to help direct flow away from the building in areas where water pooled and to notify contractor of any new leaks this upcoming spring when the ground will thaw.

SealBoss 1510 NSF/ANSI 61 Water Stop Foam was injected into the exterior cold joint along the areas where water intrusion was visible from efflorescence or rust stains. All visible leaks were addressed using the 1, 2, 3, 45 Degree method via injection packers that were placed roughly 12” from the joint where ½” holes were drilled at a 45-degree angle back into the joint. 1510 was injected until positive refusal of the hydro-active resin was visible along the cold joint.

All affected cells of the hollow core concrete slabs were injected approximately 6” from the end cap and sealed off using SealBoss 1510 NSF/ANSI 61 Water Stop Injection Foam System.

Products Used:

Injection Resin: SealBoss 1510 Hydrophobic Water Stop / Leak-Seal Foam w/ 15x Accelerator

Injection Packers: SealBoss 1/2” 13-100 Evolution Aluminum Packers

High Pressure Pump: SealBoss P2002 Single Component Injection Pump

Cleaning Materials: R70 Pump Flush, Xylene, rags, bucket

Additional Tools: 18” x 1/2″ drill bit — 3/8” Crescent Wrench — Dead Blow Hammer
Hammer Drill — Access 110v Power — Vacuum

SealBoss ® 1510 NSF Hollow Core Slab Water Stop Foam:

Hollow Core Slab Leak-Seal Repair, Crack & Joint Leak Sealer

SealBoss ® 1510 Hollow Core Concrete Slab Seal Foam Advantages:

Low Viscosity
Fast Cure Time
Advanced and Proven SealBoss ® Product-Pump-Packer System

Bestselling SealBoss ® Brand P2002 Injection Pump Advantages

Light Weight Injection Pump
High Quality Components for Durability
Proven Design – Thousands of Units Sold
Easy To Clean
Easy To Maintain
Heavy Duty For Daily Use
Pressure Gauge, Hose Set, Hopper Included
Recommended For Beginners & Injection Pros
> 5000 PSI Injection Pressure Possible

In Person and Video training is available upon request, contact SealBoss today to speak to your regional technical representative on our SealBoss full system solutions and offerings.

“While providing jobsite assistance, support and training, we create a positive learning environment where confidence and a level of comfort can be achieved in a short period of time allowing for successful repairs to be continued after the training.

From training new companies to new employees, SealBoss has continued to provide support to our users for 36 years.

With a knowledgeable technical support team, we are here to help with any questions you may have”

Technical Sales Team

SealBoss Water Stop Systems

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Leak-Seal

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How to Permanently Waterproof Tilt-Up Panel Joints with Polyurethane Grout

How to
Permanently Waterproof
Tilt-Up Panel Joints
with Polyurethane Grout

Failing and leaking tilt-up construction joints can be sealed to full depth with single component SealBoss 1570 NSF Certified Water Stop Foam and the Oakum-Soakum Method

Tilt-up Construction Joints are Typically Caulked

Over time, caulks often fail, break open, and allow water to flow into the structure. Caulk failure can be evident as shrinkage of the bead of sealant, delamination (caulk no longer sticks to surface), cracking of the bead, powdering or dusting of the surface of the caulking.

How to Create a New Full-Depth Joint Seal

While caulking creates a small 1/4″ to 1/2″ bond surface with the concrete panel, 1570 Polyurethane Leak Sealing Resin soaked SealBoss Seal-Oakum fibre provides a full-depth bond and seal against leaks permanently. The ‘Oakum Soakum Technique’ is a proven methodology for polyurethane chemical grout installation — creating a permanent seal that remains unaffected by wet, dry, and even in constant water submerged environments.

How to Prepare the Joint

Prior to any remedial repair, the existing, failed caulk has to be removed, and the joint needs to be free of any debris. The joint then needs to be wetted for the water activated grout to react, expand, and cure.

How to Install the Flexible Permanent Seal

To create a permanent seal with the Oakum-Soakum Technique, oakum fibres are first soaked in hydro-active 1570 polyurethane resin (catalyzed with SealBoss 15X Accelerator), and then pushed deep into the clean and pre-wetted joints to form a flexible and uniform seal during expansion.

How to Protect and Finish the Seal for Cosmetic Appearance

After the foam has cured, any surplus of the foam/oakum seal is cut back and finished with an even bead of caulk to provide UV resistance and achieve a matching surface appearance to the other caulked joints.

Learn More

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.

SealBoss Seal-Oakum

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Leak Sealing

Contact Your SealBoss ® Technician

Expandable Professional Polyurethane Dispensing Gun Foam

CanSeal Foam

Instant One Component Closed-Cell
Polyurethane Foam

Up to 8 gal Foam per Can
1800 Cu. Inches
1/2″ Bead Runs 900 Lin. Ft

CanSeal Foam

Instant One Component Closed-Cell
Polyurethane Foam

Up to 8 gal Foam per Can
1800 Cu. Inches
1/2″ Bead Runs 900 Lin. Ft

Expandable Professional Polyurethane Dispensing Gun Foam

Eight Gallons of Versatile PUR Foam from a 27 oz. Can

What is SealBoss ® Can Seal Foam?

Can Seal Foam is a versatile, closed cell, self curing foam for universal uses. The product is a single component MDI based polyurethane of highest quality. It expands, bonds and seals while stopping the passage of air, gases, water and dust. Besides its obvious uses to stop water infiltration it can increase energy efficiency by stopping air exchange around windows, doors, wall intrusions and at sill plates. Its lightweight, closed cell structure makes it useful for deadening sound, flotation and thermal insulation. It is also useful for scaling work areas prior to stripping to prevent the transport of fibers. SealBoss Can Seal Foam is very efficient, you get up to eight gallons foam just from one can!

The Important SealBoss Difference

SealBoss ® Can Seal Foam is specially formulated to fully expand inside the applicator ‘gun barrel’. When the foam exits the tip of the gun it is almost fully expanded – you apply exactly as much foam as you need without the messy and undesired “mushrooming” experience you may have with most of the other ‘over the counter’ foam products. This feature makes our foam predictable and suitable for many applications that cannot be performed with standard foam products. And with the professional applicator gun you can fill voids with the exact amount of foam desired.

Contractors use our foam for many applications such as water-stop purposes in voids and cable runs, as an insulation and seal-foam in general construction and as an instant ‘Backer Rod Bead’ in applications where joints need a back fill prior to applying the final sealant.