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Waterproof Concrete Cracks (Interior)
If your basement foundation is made of solid concrete (which is normally found on homes built after 1975), hairline cracks can be repaired from within your basement through a pressure injection of either epoxy or poly-urethane. Insertion ports are installed along the crack and the epoxy or poly-urethane is injected into the crack all the way to the outside.
Epoxy Concrete Crack Injection
An epoxy crack injection does not only stop water but also provides structural strength. Like the familiar epoxy glue, it fills the crack and “glues” the concrete. Its strength and bond with concrete greatly exceed the strength of the concrete itself. And the high bond and tensile strengths of epoxy prevents further elongation and yawning of structural cracks. Epoxy low pressure crack injection method insures that the full depth and length of the crack is filled. It fills cracks in walls up to 24 inches thick.
Polyurethane Concrete Crack Injection
Over 95% of residential basement cracks are non-structural - the only problem is the seepage of water. A polyurethane crack injection does not add structural strength; it just forms a barrier impenetrable to water. Polyurethane resin remains flexible, which allows for continuous natural movement of the concrete due to thermal shrinkage and expansion or settling. It bonds tenaciously to dry or wet concrete. It can be used to repair wet or even leaking cracks. The polyurethane polymer forcefully expands, which ensures that the full depth and length of the crack is filled. It fills cracks in walls up to 24 inches thick. Polyurethane can expand over 20 times its volume. If there is a void on the backside of the wall, it will fill it too - there is no way for water to ever find the crack again. The polyurethane polymer has low viscosity to fill hairline cracks but expands to fill wide cracks (up to 3/4 inch). We use the highest-quality two-component polyurethane. There are inexpensive single-component polymers on the market but they are not suitable for repair of cracks subjected to water pressure. We use hydrophobic polyurethane, which repels water. In contrast, hydrophilic foams absorb water and when allowed to repeatedly dry out, like in a basement, they release the water molecules and slowly crumble.
Polyurethane can also be used to create a water-resistant seal in rod holes, cold joints, electrical conduits, septic projections, well/water lines, and many other applications.
Cold joint in cold cellar ceiling is pressure injected with polyurethane for permanent water seal.
Why Polyurethane or Epoxy is Better Than a Patch
No other concrete crack repair process can do what polyurethane or epoxy injection can do. Surface patching of the crack is just that. Only the inside of the basement wall is covered by a repair. Chiseling out the concrete crack and filling it with hydraulic cement only fills a portion of the crack. Water can still enter the basement crack and will eventually force out the patch or hydraulic cement and the patch will re-crack again and again allowing water to enter.Patching a crack only makes it worse for most professionals to repair it later.It will also effect the cost of the repair later by a professional.
Poured concrete wall crack repaired with hydraulic cement (releaked)
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Ashpark Basement Waterproofing Contractors|1-800-334-6290|Services in Ontario
Other Services We Perform
Drainage Systems
Concrete Crack Injections
Misc
Exterior Excavation
Window Well / Latteral Drain Installations and Repair
Waterproofing (rubberized membrane applications)
Drainage Layers / Drywells
Brick / Masonry / Stone / Concrete Sealing
Damp Proofing
Electric Snaking / Inline Cameras
Snaptie / Tierod Repairs
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