Stego Mastic is a liquid-applied vapor retardant membrane, designed to be used in conjunction with Stego Wrap vapor barriers and retarders to create a quality installation that greatly resists the ingress of moisture and other gases. It can be used for sealing utility, pipe penetrations, and terminating edges when used in conjunction with Stego Tape or StegoTack Tape. Stego Mastic is available in 2-gallon or 5-gallon pails, and in 20-ounce sausage tubes for repairs and small installations.
Its many features include:
Stego Mastic is a water-based, medium-viscosity, polymer-modified anionic asphalt emulsion. It can be used to seal permanent penetrations of Stego Wrap quickly and easily, especially small pipes, between pipe clusters, and terminating edges.
APPLICABLE STANDARDS American Society for Testing & Materials (ASTM):
Stego has the accessories you need to complete an ASTM E1643-compliant installation. Stego Tape, Stego Mastic, Stego Crete Claw Tape and StegoTack Tape enable efficient vapor barrier installations, saving time and resources.