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.

However it s not that simple. Snip the opening of the tube at a 30 degree angle making the opening the same size as your gap. However it will eventually fail in one of two ways. This will hopefully be the fix that keeps that wall of the sunroom nice and dry.

The water being blocked by the sealant will find another gap in your foundation to enter the home. 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. To remedy this issue i installed backer rod in the gap that i then covered with concrete crack 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. Use a smooth even motion filling the crack flush with the surface beveling it if it s against the house. Fill the crack with urethane caulk similar to what you would use for driveway caulk. It works perfectly as a concrete expansion joint sealant.

Even so the new concrete does not bond with the already cured footings so a tiny gap exists between the two.