Seal Gap Between Concrete Floor And Wall

Under ordinary circumstances this gap is too small to admit water.

Seal gap between concrete floor and wall.

Use a smooth even motion filling the crack flush with the surface beveling it if it s against the house. In the short term a sealant applied along this gap between your basement floor and wall may prevent leakage. Typically this will be cracks in your foundation. Fill the crack with urethane caulk similar to what you would use for driveway caulk.

It works perfectly as a concrete expansion joint sealant. Slide the flat end of a pry bar between the baseboard and the wall. The gap in question was previously filled with either fiberboard or concrete crack sealant but enough of it has deteriorated to conceivably allow moisture in. This will hopefully be the fix that keeps that wall of the sunroom nice and dry.

After the walls have cured the basement floor is poured leaving a similar tiny gap known as the cove joint between the cured walls and newly poured floor. The water being blocked by the sealant will find another gap in your foundation to enter the home. However it s not that simple. Remove the baseboard if present to expose the gap between the subfloor and the wall face.

However it will eventually fail in one of two ways.