SOL-R-SKIN Composite Underlayment is designed for installation under various types of roofing materials. It features a polypropylene layer for water resistance, combined with high-polished aluminum. With an emissivity rating of 0.03, SOL-R-SKIN effectively lowers attic temperatures by up to 35°F. Importantly, it does not compromise the integrity of roofing materials or affect warranties, making it an ideal choice for enhancing your roof’s performance.