TRI-BUILT® Smooth Seal HT Underlayment is a SBS modified bitumen membrane reinforced with a fiberglass mat. The self-adhesive underface is covered with a split back silicone release film. The top face is composed of a non-slip plastic surface.

TRI-BUILT® provides quality residential and commercial building materials that deliver professional results. By focusing on the professional contractor, TRI-BUILT® has become a recognized and trusted leader in the construction industry. From roofing and siding materials, windows, coatings, and more, TRI-BUILT® is a name you can trust at a competitive price.