- Concrete Crack Repair Home
- Floor & Slab Crack Repair
- How crack injection works A cost effective permanent fix for basement leaks
- Low-Pressure Crack Injection (Basement Walls and Foundations)
- Do-it-yourself crack repair A kit for contractors and homeowners.
- Basic steps in the injection pocess Installing injection ports, sealing, epoxy vs. polyurethane, injection and port removal
- Allowable crack widths At what width does a crack become a problem?
- Related Information
- Concrete Repair General overview of concrete repair
- Concrete Patch Repairing cracks in concrete flatwork
- Foundation Repair Repairing a concrete foundation
- Find Crack Repair Products
How Crack Injection WorksA cost-effective, permanent fix
Most basements eventually leak. "Even if a crack is not leaking now, eventually water will find it," says Lou Cole, president of Emecole Inc., Romeoville, Ill., a manufacturer of epoxies and polyurethane foams for all types of foundation crack repair. Cole says that in the Midwest, crack injection has been an accepted way of tackling these repairs for many years, and more and more foundation repair contractors around the country are adopting the technique because it is cost-effective, reliable, and permanent.
"Emecole's customers, primarily residential waterproofing contractors, have less than a 1% callback rate for crack repair work. More than 99% of the time, crack injection will fix the problem," says Cole. "Most contractors in the Chicago area (as well as other parts of the country) warranty the injection repair for the life of the structure," he adds.
Cole launched his company in 1987, after coming up with the concept of dual-cartridge dispensing of two-component materials using a spring-assisted dispensing tool similar to a caulking gun. The application that seemed to show the most promise for his dual-cartridge system was low-pressure injection of cracks in concrete. That gave him the impetus to develop a line of epoxies and polyurethane foams specifically formulated for those types of repairs.
The whole purpose is to fill the crack, from front to back, with epoxy or polyurethane. "For basement walls, low-pressure injection is the best way to ensure that the crack is completely filled," Cole maintains. This method is effective for filling cracks 0.002 to 1 inch wide in walls up to 12 inches thick. It can also be used to fill cracks in concrete floors and ceilings.