Stopping Water Leakage Through Interior Foundation Cracks
During heavy rains, a fine trickle of water enters our basement through a vertical hairline crack in our concrete foundation. I tried patching it from the inside with hydraulic cement from a local hardware store, but after a few months, the water pushed right past the patch. Why do surface patches fail, and how do professional technicians permanently seal cracks from the inside?
3 Views
Surface-applied hydraulic cement or silicone caulking fails because groundwater pressure eventually forces its way behind the surface layer. Professional interior crack repair utilizes high-pressure injection ports drilled directly into the crack path, flushing out dirt and forcing polyurethane resin all the way through the concrete thickness to the outer soil barrier. Take a look at https://leaquida.ca/interior-waterproofing-toronto/crack-repair/ to see how injection port systems seal leaking basement walls from within. This creates a watertight gasket throughout the entire wall depth without requiring lawn excavation.