TAMKO^® TW Metal and Tile Underlayment is a flexible, fiberglass reinforced, self-adhering, rubberized asphalt sheet membrane with a polymer film on the surface and a split removable treated released film on the adhesive side for fast, easy installation.

TAMKO TW Metal and Tile Underlayment is well suited for use as an underlayment where prevention of water penetration is required prior to installation of a metal roof system or mechanically fastened tile roof system. It also provides secondary protection against water penetration after installation of a metal roof system.