Products / Owens Corning FOAMULAR & FOAMULAR NGX 400/600/1000 Tapered XPS Insulation

FOAMULAR and FOAMULAR NGX 400/600/1000 Tapered are higher-compressive-strength extruded polystyrene (XPS) tapered insulation panels for low-slope roofs over structural decks, which Owens Corning describes for use in protected roof membrane assemblies (PRMA) to provide a drainage slope. The data sheet lists 24 in. x 96 in. panels A through G for 1/8, 1/4 and 1/2 in. per foot slopes, each offered in the 400, 600 and 1000 grades, which it gives as ASTM C578 Type VI, Type VII and Type V respectively. It lists UL Classification Certificate U-197, UL ER8811-01, FM Class 1 roof decks, ASTM E108 fire classified and ASTM E119 fire resistance rated assemblies, and UL and FM wind uplift rated assemblies. Owens Corning states a limited lifetime warranty that the insulation maintains 90% of its R-value, subject to the warranty's terms.