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Seal concrete floor wall joint.
Unfortunately you can t just seal the gap between your basement floor and wall to fix it.
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.
Learn why not and the best options for keeping water out of the cove joint by reading below.
You can seal these joints but you must ensure that the seal does.
It exists due to the way that a home s foundation is poured.
What is a cove joint.
Using concrete joint sealant to seal concrete expansion joints and concrete contraction joints in concrete floors and concrete walls is an important part of maintaining the integrity of the concrete.
This joint where your basement wall and floor meet is known as a cove joint.
Under ordinary circumstances this gap is too small to admit water.
All it takes is backer rod and concrete flex sealant.
Installing the proper kind of concrete joint sealant will help protect the structure from moisture damage caused by rain wind gravity capillary force and surface tension.
Even so the new concrete does not bond with the already cured footings so a tiny gap exists between the two.