What Does Sill Seal Do

Sill seal is ribbed polyethylene foam used to seal the gap between the sill plate and the foundation. … The ribs effectively seal out air currents, moisture and insects, leaving you worry free to enjoy your home.

What is sill sealer and where is it used?

Made from ribbed polyethylene foam, Reflectix® Sill Sealer was designed to reduce air leakage between the foundation wall and sill plate. The Sill Sealer can also be used to seal around window and door frames.

What should I put between wood and concrete?

Anyplace where wood meets the ground or concrete, the lumber must be pressure treated. For additional moisture protection, a gasket or strip of closed-cell foam can be installed between the concrete foundation and the sill plate.