Slab Seal provided by our company is cut in concrete slabs or the joints between walls and concrete slabs which go completely through the slab to the base material. This seal is to allow the concrete slab to expand and contract due to temperatures changes, without cracking the slab.Slab Sealis a structural element, made of concrete, that is used to create flat horizontal surfaces such as floors, roof decks and ceilings. A slab is generally several inches thick and supported by beams, columns, walls, or the ground.This slab protects concrete and asphalt surfaces by locking out oil and penetrants. This slab highlights and protects line marking on both concrete and asphalt surfaces, dramatically reducing maintenance costs.