Waterproof underlay membrane BORAL® ACRILAY®

While tile is ultimately the first line of defense against the elements on a roof installation, underlayments play a critical role by providing a secondary level of waterproofing protection directly on top of the wood roof deck. As a crucial barrier that contributes to the performance and longevity of the entire roof system, it is important to choose the right underlayment for your roof and your particular climate. Boral® Acrilay® is a partially self-adhered, SBS modified, fiberglass reinforced underlayment/base sheet with proprietary acrylic lap seal technology for tile, stone-coated steel, shingle or shake. SBS modified asphalt helps to minimize the wrinkling and buckling associated with non-modified membranes. Durable Protection - All Season Quick and Easy Installation 6 Inch Acrylic Adhesive Strips Adhere to the Deck and Laps 180 Days Uncovered Exposure 20 Year Limited Manufacturer’s Warranty for 1 or More Layers