Sto RapidGuard® is a moisture-cured, damp surface tolerant StoGuard Detail Component. Using, Silyl-Terminated Polyether (STPE) polymer,  it is ideally suited for sealing sheathing joints and complex shapes such as penetrations and protruding/recessed window bucks.

81571-740 Sto RapidGuard™ Cartridge

81571-741 Sto RapidGuard™ Sausage