Building Products for the Professional

TW Metal and Tile Underlayment

A flexible fiberglass reinforced self-adhering rubberized asphalt sheet membrane 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. Provides secondary protection against water penetration after installation of a metal roof system.

TW Metal and Tile Underlayment

Limited Warranty
  • 5-year Product Limited Warranty
  • Polymer film on the surface and a split removable treated released film on the adhesive side for fast, easy installation
  • Textured surface provides skid resistance
  • Strong fiberglass reinforcement for added stability during 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 120 days before application of finished roof

IMPORTANT: This product features a skid resistant and tear resistant surface. This feature does not serve as a substitute for following all proper fall protection procedures in accordance with OSHA regulatory requirements–including the use of personal fall protection devices when working on a roof. Applicator safety is of utmost importance.

TW Metal and Tile Underlayment

Data Sheets



Applicable Standards

  • ASTM D 1970

Additional Certifications

TW Metal and Tile Underlayment