Summary
Q: There are two cracks in my concrete basement foundation that I can't seem to repair permanently. My patches last a year or so, then leaking starts again. Can you help? - P.K.
A: Cracks in walls are often difficult to repair permanently because of slight movement in the structure that eventually causes the patch to loosen and fail. Some patching materials also shrink in time.See the full content of this document
Extract
Do It Yourself: ; Concrete Cracks Hard to Repair
One method that sometimes works well on concrete walls is to chisel the crack to form a V-shaped "key" that will help hold the patch in place. The V should be larger on the inside than the outside. The crack can then be filled with expanding hy...
See the full content of this document
Sponsored links
