Can't find your product? See comparison chart

      Data Sheet Shop Now

      GAF Silicone Mastic Specs

      GAF Silicone Mastic Docs

      GAF Silicone Mastic Videos

      About GAF Silicone Mastic

      A thick, high-build silicone sealant featuring low odor, an easy application, a fast moisture cure, and enhanced adhesion to a variety of substrates.

      Benefits

      Benefits of GAF Silicone Mastic include:
      • A high-solids sealant
      • Low odor
      • Brush grade for easy application
      • Fast moisture cure
      • Enhanced adhesion to a variety of substrates
      Commercial Recommended GAF Certified Roofing Companies Near You

      Where to buy

      Find a commercial distributor near you.

      Find a contractor

      Find a GAF certified contractor near you.

      Get Support at Every Phase of Your Project

      PLANNING

      Get assistance with detail drawings and products
      GET STARTED

      PURCHASE

      Receive support from your local territory manager
      CONNECT

      DELIVERY

      Get delivery instructions or see status updates
      GET STATUS