QT Eterna-Kote Silicone S-10 Roof Patch and Repair, fill level 28oz. A heavy duty, white rubber sealant that provides the ultimate waterproofing protection from the elements. Seals and stops leaks, Permanent seal, Excellent adhesion, heavy duty repair. This product has exceptional adhesion and flexibility and is compatible with most building materials. Use to make repairs on damaged roof areas. In hot or cold climates, this waterproof seal will permanently stretch to prevent cracking & peeling. Apply with trowel or stiff brush. Add universal reinforcing fabric into repair for permanent repairs and then cover with an additional layer of sealant. Coverage: approx 3 sq/ft. Exterior use only. 50-year limited warranty.