Seal Gap Between Concrete Floor And Wall

The water being blocked by the sealant will find another gap in your foundation to enter the home.

Seal gap between concrete floor and wall.

This will hopefully be the fix that keeps that wall of the sunroom nice and dry. Under ordinary circumstances this gap is too small to admit water. Slide the flat end of a pry bar between the baseboard and the wall. To remedy this issue i installed backer rod in the gap that i then covered with concrete crack sealant.

Snip the opening of the tube at a 30 degree angle making the opening the same size as your gap. 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. However it s not that simple. In the short term a sealant applied along this gap between your basement floor and wall may prevent leakage.

Fill the crack with urethane caulk similar to what you would use for driveway caulk. Even so the new concrete does not bond with the already cured footings so a tiny gap exists between the two. Remove the baseboard if present to expose the gap between the subfloor and the wall face. Use a smooth even motion filling the crack flush with the surface beveling it if it s against the house.

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.