Filling Gap Between Concrete Slab And Wall

Then you can fill in the gap using sika.

To remedy this issue i installed backer rod in the gap that i then covered with concrete crack sealant. 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. This will hopefully be the fix that keeps that wall of the sunroom nice and dry. After you cut it to length of course they make them 1 1 2 x 1 1 2.

Even so the new concrete does not bond with the already cured footings so a tiny gap exists between the two. Use the end of a putty knife to push the rod firmly into the gap. Under ordinary circumstances this gap is too small to admit water. How to fill up a gap between the brick wall and the horizontal concrete slab to be waterproof the water is coming inside through the gap between the sidewalk the fist level is on slab at a split level house built in 1972 and the brick wall.

Once the wood strips are in place fill any small gaps between the wood and the concrete slabs with medium sand. I poked at it with a chisel and removed the loose material. In the short term a sealant applied along this gap between your basement floor and wall may prevent leakage. The screed and concrete around the edge of my concrete slab where the slab meets the external cavity wall was cracked.

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This is done around the edges usually but alternatively just like with a paver patio you could dig out a much larger hole a foot or more all the way down and then fill with gravel covered with cloth covered with sand compacted at every layer and the concrete poured on that. If necessary use multiple rods. Why you can t just seal the gap between your basement floor and wall. We removed parts of the interior wall and this is how we saw the wet wood behind mostly at the base of the structure.

However it s not that simple. We can t tell how deep it goes from the photo but it should go at least a foot. My concrete slab and the masonry walls are waterproof but the water is coming up between expansion joint which is between masonry wall and concrete slab is there a product that can stop a tiny. Or instead of wood go to an aluminum carport supplier and purchase a 1 1 2 x 16 aluminum beam to tap down in there.

This has left a channel of about 1 wide all the way around the edge of the wall. That way you only have to place the backer rod so that it s maybe 1 8 to 1 4 of an inch below your slabs. Stuff the rod into the gap filling it up to about 1 4 inch from the surface of the concrete. 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.

The sand will be natural looking and it will finish off the job nicely.