Products / Sarnatherm ISO

Rigid closed-cell polyisocyanurate roof insulation board with fiber-reinforced felt facers, for new construction and re-roofing with Sarnafil or Sikaplan membranes in mechanically attached and adhered systems. Flat boards come in 4 ft x 4 ft and 4 ft x 8 ft panels from 1.0 in (LTTR 5.7) to 4.5 in (LTTR 26.8) thick, at 20 psi (Grade 2) or 25 psi (Grade 3). Sarnatherm ISO tapered is the factory-sloped version in 4 ft x 4 ft panels at 1/16 to 1/2 in per foot slopes, for positive drainage. The data sheets list ASTM C1289 Type II, Class 1, UL 1256, 790 and 263, FM 4450 and 4470, Miami-Dade County and Florida approvals; the product is supplied through Sika Roofing authorized applicators for use within Sarnafil or Sikaplan systems.