35lb 200 SQFT Roll Roofing Underlayment

LayfastSBS is a superior and competitively priced alternative to traditional 30 and 40 lb organic felt. The addition of SBS rubber to asphalt gives LayfastSBS an elastomeric property that is not available in common felt. LayfastSBS contains a higher percentage of asphalt for increased waterproofing. Its inorganic fiberglass reinforcement eliminates the rot and deterioration associated with saturated felt.