How to Repair & Seal Expansion Joints in Concrete

This how-to video shows you how to repair and seal vertical and horizontal expansion joints (gaps/breaks/spaces in concrete surfaces that allow for movement).
Expansion joints are cuts in concrete slabs....or the joints between walls and concrete slabs...that go completely through the slab to the base material. The purpose of an expansion joint is to allow the concrete slab to expand and contract with temperatures changes, without cracking the slab. Expansion joints must be sealed with a flexible sealant, like QUIKRETE Self-Leveling Polyurethane Sealant or QUIKRETE Non-Sag Polyurethane Sealant (dependent on application), or an expansion joint strip, to prevent water from penetrating the joint and deteriorating the sub-base. This is an easy DIY home repair project that can be achieved with the right know-how and proper surface preparation. Watch the video, to learn how!