A high-solids non-shrinking moisture cure silicone sealant intended for sealing and repairing roofs, masonry, architectural metal and metal roof seams & fasteners. Minimal odor, contains no solvents and less than 10 grams per liter VOC. Use to seal penetrations and terminations prior to application of Mule-Hide 100% Silicone Roof Coating. Excellent adhesion to concrete, masonry, polyurethane foam, EPDM, aged PVC, aged acrylic coatings, granular cap sheet, wood, metals, Kynar®and most other common building materials. Si TPO Primer is required for application TPO roofs.