Products / Westlake Royal TileSeal HT

A self-adhering SBS modified bitumen roof underlayment with a polyester surfacing, nominal 60 mil thick, made in Brentwood, NH, for sloped roof assemblies and evaluated for use under tile. Florida Product Approval FL14317 lists it under ASTM D1970 and FRSA/TRI, with wind resistance tested to UL 1897 and tensile adhesion to TAS 103. Miami-Dade NOA 25-0407.04 also accepts it in 36 in x 36 ft and 36 in x 72 ft rolls, including in two-ply systems over SwiftAnchor base sheet.