This product is a lightweight synthetic textile fiber designed for use as an alternative to traditional fiberboard and perlite insulations.
OK, just kidding about that last part, but you should still investigate Nova Rollout from Leggett and Platt, Textile and Fiber Division, Nashville, Tenn. This product is a lightweight synthetic textile fiber designed for use as an alternative to traditional fiberboard and perlite insulations under thermoset and thermoplastic single-ply roofing membranes. The roll product can also be used as a substitute for other single-ply separator sheet materials. It is composed of processed textile fiber that is needled for strength and resin-bonded for durability.