ProsocoR-Guard Air Dam

AirDam is a gun-grade waterproofing sealant that combines the best of silicone and polyurethane properties. This single component, Silyl-Terminated-Polymer (STP) is easy to gun and tool in all weather conditions.Installed as the interior air sealant, R-Guard AirDam creates a long lasting, weather-tight seal that prevents moist outside air from entering, and conditioned indoor air from escaping around window and door assemblies. This ensures that wind driven rain and condensed water are diverted to the flashing membrane and the water resistive barrier before it can enter the living space.

Patio Door install and works great!

Product only good for one year. I received expired product.Update!!!! I have found out I was reading the expiration date wrong. The date on the package is actually the patent date. To read the production date you look at the last 5 digits of the lot number. The first 2 are year and the other 3 are the day of the year it was made. So 21134 is year 21 and 134th day of 2021. Hope this helps