Roof fiberboard manufactured to a uniform density using cellulosic wood fibers with additives to improve moisture resistance. Roof fiberboard is surface treated to promote adherence of the roofing membrane and reduce adhesive or bitumen strike-in.

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.