Sure-Seal 45-mil (1.14 mm), 60-mil (1.52 mm) and 90-mil (2.29 mm) membranes are Ethylene Propylene Diene Terpolymer (EPDM)-based elastomeric homogenous roof coverings that can be used for a variety of waterproofing applications. Membranes are available in widths up to 10′ (3 m) and lengths up to 100′ (30 m). These membranes are available as Fire Retardant (FR) membranes, which are specially formulated to inhibit spread of flame and meet or exceed code body testing criteria for fire retardant roofing membranes.