Cool roofs can be achieved by other means. Guardian elastomer-based coating options, for example, can cost-effectively transform metal, BUR, modified bitumen and aged single-ply roofs into reflective roofs that can reduce building energy requirements. Roof Guardian RG-170 is a white finish coat with a solar reflectance index (SRI) of 109. Roof Guardian RG-180 is a fibered white coating (SRI 108) that achieves Class A fire rating. Both are Energy Star and CRRC rated. The waterproofing products are formulated using an acrylic polymer base for enhanced adhesion and durability, and both resist cracking and peeling. Roof Guardian products are also useful for gutterways, repairs and other projects, and can be quickly applied with a commercial-grade sprayer, roller or brush. They complement Kemperol cold liquid-applied Cool Roof membrane systems, which are fully reinforced for long-term performance. This includes the odor-free Kemperol Reflect 2K FR (SRI 110), and the fast-curing Kemperol AC Speed FR (SRI 108), a PMMA which allows one-day application.
