Westlake Royal Building Products has rolled out its SwiftAnchor high-performance and mechanically fastened base or anchor sheet. 

In a news release, Westlake Royal said SwiftAnchor is designed specifically for the “optimal adhesion of Westlake Royal TileSeal HT and Westlake Royal MetalSeal HT underlayments.” Incorporating patented nail-gasketing technology, the company said its product offers “superior moisture and wind uplift resistance” combined with a high grip backing for deck grab and improved walkability.

“After years of development to perfect this product, we are proud to introduce SwiftAnchor,” Steve Booz, director of marketing and product management for Westlake Royal Building Products, said. “The many features of this base sheet make it an ideal choice for roofing contractors in need of an effective and protective mechanically fastened option.”

SwiftAnchor is constructed of three layers: The top-engineered coating layer is designed for adhesion, walkability and as a gasket moisture barrier. The second layer offers strong tear-resistant reinforcement, while the third provides exceptional grip to the deck, along with added gasketing moisture barrier protection. Combined, the company says the three layers provide protection from the elements in all climates, seasons and weather.


The product is offered in rolls, each 40” x 300’ and comprised of approximately 10 squares, or 1,000 square feet. With each roll weighing just 45 pounds, the company noted that the product is easy to load and install on the roof. Clearly identifiable lay lines also simplify installation. Westlake Royal says SwiftAnchor’s patented gasketing technology, UV and thermal stability allow for it to be left uncovered for up to 60 days. 

SwiftAnchor is certified for ASTM D8257 and meets the stringent performance requirements of Miami-Dade and FBC 2023 when installed with Westlake Royal TileSeal HT or Westlake Royal MetalSeal HT underlayments. The product comes with a limited 30-year warranty.

“SwiftAnchor is both simple and quick to install, and it is notably designed to withstand extremely high wind conditions,” Booz added. 

For more information, visit WestlakeRoyalBuildingProducts.com.