Products / Sarnatherm Roof Board-R

Lightweight high-density polyisocyanurate roof cover board with coated glass facers, for new construction and recover roofs under Sarnafil or Sikaplan membranes, mechanically fastened or adhered. Supplied 0.5 in thick in 4 ft x 4 ft and 4 ft x 8 ft panels, weighing about 0.35 lb per sq ft, with 80 psi minimum compressive strength (ASTM D1621) and a thermal resistance of 2.5 (ASTM C518). The data sheet lists ASTM C1289 Type II, Class 4, Grade 1, FM 4450 and 4470, UL 1256, 790 and 263, UL certification for Canada and IBC Section 2603 foam plastic compliance.