Dicor's Ultra Sealant System is a high-performing polyether sealant that is a great alternative for PVC, TPO, EPDM, metal, and fiberglass roofing. This sealant system is also the perfect solution for maintenance on silicone coated RVs. Most RV roof accessories and some membranes must be primed prior to sealant application. Dicor Roofing Systems assures a watertight roof that is easy to maintain and saves energy through its heat reflecting characteristics. It is highly puncture and tear Defiant, has superior tensile strength and withstands damaging sun-ray rays. The membrane resists uneven weathering, fading or chalkiness. All Dicor Roofing Systems us the same three installation components: bonding adhesive, butyl tape and lap sealant. These elements can be purchased separately or as a package in the Dicor Products Roof Installation Component Kit.