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. TW Metal and Tile Underlayment also provides secondary protection against water penetration after installation of a metal roof system.

• Textured surface provides skid resistance
• Strong fiberglass reinforcement for added stability during installation
• Split treated release film for easier installation
• High temperature resistance up to 250° F
• Meets ASTM D 1970 for nail sealability of self-adhering roofing underlayments 
• Can be left exposed for up to 90 days before application of finished roof