Gap Between Stucco Wall And Concrete

This prevents water from moving up and into the gaps between the sill and the cement wall it sits upon.

Gap between stucco wall and concrete. Differences b etween concrete and stucco. This first coat is known as the scratch coat this coat helps the final coat bond properly to the wall. The scratch coat should be between 1 4 and 1 2 inch thick. To remedy this issue i installed backer rod in the gap that i then covered with concrete crack sealant.

One big difference between the se two home exteriors is that when dry stucco is breathable it has tiny pores that allow water to evaporate from behind it so that moisture doesn t build up and cause rot. Concrete is made of cement water and sand. The gap between the wall and the trim is fairly large at least 1 2 inch. Allow the scratch coat to harden slightly.

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. Stucco is made of these ingredients as well plus lime. But you should not in any event seal off the gap behind the stucco as moisture will go through the surface and trapping it will only lead to more decay further up into the wall cavity.

The differences between stucco wall concrete wall stucco is breathable. I have a stucco sided house that i am repairing repainting. Use the flat finishing trowel to spread the stucco evenly across the surface. In any case this is not a drainage style system.

Apply the first coat of stucco to the concrete surface.