Products / Westlake Royal MetalSeal 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. 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.