Sealing Concrete Pipe Seams with Chemical Grout and SprayWall: A Long-Term Solution for Infiltration and Abrasion
David Sorokovsky • July 23, 2025
Concrete pipe joint sealing is essential for preventing water infiltration and maintaining the integrity of aging infrastructure systems.
At Quantum Industrial Solutions (QIS), we deliver practical and durable rehabilitation solutions for aging concrete infrastructure. One of the most common challenges in concrete pipelines is joint infiltration and surface deterioration at the seam locations. To address this, our team applies a two-step system combining chemical grouting and SprayWall structural lining.
What is Concrete Pipe Joint Sealing?
Concrete pipe joint sealing is a rehabilitation method used to stop water infiltration at pipe joints using specialized materials such as chemical grout and protective linings.
Common Problems in Concrete Pipe Joints
Over time, precast concrete pipe joints can develop small gaps due to:
- Ground movement
- Improper installation
- Aging and shrinkage
- Hydrostatic pressure
These gaps allow groundwater infiltration into the system, leading to:
- Increased treatment costs
- Soil erosion around the pipe
- Flow blockages or debris accumulation
- Risk of pipe settlement and failure
Pipe Joint Sealing Process Using Grout and SprayWall
We use a targeted, two-layer approach:
Seam Sealing with Chemical Grout
We inject a high-performance chemical grout into pipe joints. This material expands and bonds to the surrounding concrete, filling any voids or cracks.
Purpose:
- Stops infiltration instantly
- Fills irregular gaps and smooths transitions
- Bonds well to moist or uneven surfaces
Protective Lining with SprayWall
After grouting, we spray SprayWall, a high-build polyurethane structural lining, over the treated area.
Purpose:
- Protects the grout from abrasion due to high flow or debris
- Enhances long-term durability
- Seals the entire interior surface for a watertight system
- Adds structural reinforcement and corrosion protection
SprayWall is applied at a thickness based on project needs (typically 6–10 mm), creating a continuous, seamless liner across the full pipe wall—including joints.
Benefits of This Method:
- Stops water infiltration
- Extends pipe service life
- Reduces maintenance and treatment costs
- Minimal downtime (fast curing)
- Compatible with various pipe sizes and conditions
Where This System Works Best:
- Sanitary or storm sewers with leaking joints
- Culverts and large-diameter concrete pipelines
- Rehabilitation of aging infrastructure where full pipe replacement is not practical
Our concrete pipe joint sealing solutions are used across Canada and the United States to restore infrastructure and prevent long-term system failures.
Contact Us today to learn how we can help seal your concrete pipe system and protect your infrastructure investment. Our experienced team provides turn-key solutions across Western Canada, including inspection, surface preparation, grouting, and coating.
