Contraction joints create weakened planes in concrete slabs to help control the location of cracks and reduce random cracking. The most popular ways of creating contraction joints is by using saw ...

If random cracks do occur, they should remain fairly tight because of the limited joint spacing and low concrete shrinkage thereby limiting future serviceability or maintenance issues. When slabs ...

Used for cracks in basement walls ... it a 5-star rating and 15% gave it a 4-star rating. "This is the best concrete joint ...