The purpose of joint sealing is to minimize water from getting under your concrete slab. Water can destroy a slab if it starts to wash out the earth below it, causing the concrete to buckle, break or crack off.
Why You Should Seal Joints?
Prevents water from getting under the slab. Water under slabs can cause washouts that create buckling, breaking and shifting.
Prevents weeds, grass and other unwanted foliage from growing in the slabs control joints.
It is the most cost effective approach to taking good care of areas where two concrete surfaces join and is an important part of improving the overall durability and longevity of concrete.