Deteriorated or “spalled” joints are the number one problem in a concrete floor. Saw cut contraction/control joints and ...

By creating straight-line weakened-planes in concrete, contraction joints “control” the cracking location by inducing cracks at predetermined locations. As slabs shrink due to cooling and ...

Next, clear debris from the joints themselves ... below the slab surface. This will let a 1/4-in. to 1/2-in. layer of caulk top out just below the concrete surface. Using a metal scraper can ...