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Foundation Waterproofing
Negative-side polyurethane injection stops active leaks through cracks and cold joints in below-grade walls and slabs.
Below-grade
PU resin
Negative-side
Most below-grade leaks trace back to a crack, cold joint, or tie-hole in the concrete. We inject resin directly at the defect from the inside face — no excavation of the exterior waterproofing membrane required.
The resin expands to fill the void, then cures into a permanent, flexible seal that moves with the structure instead of cracking again under the next freeze-thaw cycle.
- Crack and cold-joint injection
- Parkade, slab-on-grade, and elevator pit sealing
- Foundation walls and mechanical rooms
- Documented, permanent seal
Related
Other services
Have an active leak?
Talk to a grouting specialist about your site today.