Therma Sheet Roofing Underlayment is manufactured in the USA by Environmentally Safe Products, Inc. It is a 99% pure polished aluminum facing heat laminated to a closed cell foam core. Preferably it is used in conjunction with traditional felt paper. Therma Sheet provides excellent thermal and moisture protection under metal roofing, stone coated steel, concrete or clay tile. The product is very lightweight and easy to install. The material composition of Therma Sheet allows it to outlast and outperform yesterday’s underlayments. Therma Sheet reflects up to 97% of the radiant heat that is normally transferred into the attic by super heated roofing materials. Therma Sheet used under your roofing system will help cut your summer air conditioning bills. It greatly reduces attic heat gain making this space more usable and the rest of the house cooler. BENEFITS OF THERMA SHEET: - Installs easily with a razor knife - Lightweight rolls - Moisture Barrier - Energy Star, Green building product - Superior thermal performance - Helps deaden sound - Class A Class 1 fire rating - Reduces attic temperature - SAVES YOU MONEY