What is the difference between a caulk & a sealant?
Caulks and sealants both prevent the passage of water between the bonded materials. However, the main difference between a caulk and a sealant is their ability to allow expansion. Sealants are made from elastomeric material that fills and seals joints that will expand or have movement. Sealants allow for horizontal and lateral movement and will return to its original shape when expansion releases. When choosing your application type, it is important to understand if what you are sealing will need the ability to move and stretch.
