Joint sealant / filler Joint sealant or joint filler is a flexible material installed within pavement joints to reduce water infiltration and accommodate movement. It helps protect the edges of concrete slabs.
Sealants help prevent moisture, debris, and incompressible materials from entering pavement joints, reducing the risk of damage during seasonal movement. Different sealant products are selected depending on the joint type and expected service conditions. Regular inspection may be needed as sealants age and deteriorate over time.
Frequently Asked Questions About Joint sealant / filler
What does joint sealant do?
It fills pavement joints with a flexible material that blocks water infiltration while still allowing the slabs to move.
Why keep water and debris out of joints?
Water entering joints saturates the base and freezes, and trapped incompressible debris prevents slabs from expanding, which causes spalling at the joint edges.
Do sealants need maintenance?
Yes. Sealants harden, shrink and pull away with age, so joints should be inspected periodically and resealed when the material fails.
Is one sealant right for every joint?
No. Products are selected based on joint type, movement expected and service conditions.