WeatherMaster® Granular Surfaced Peel & Stick SBS Reinforced Underlayment General Information

WeatherMaster® Granular underlayment is a self-adhesive composite underlayment. The adhesive layer is composed of a proprietary modified asphalt, reinforced with an extra heavy fiberglass mat.

The surfacing of opaque granules provides excellent traction and protection from UV radiation and weathering. The self-adhesive side is covered with a split release sheet which is removed during installation.

WeatherMaster® Granular underlayment composite is 47 mils (1.3mm) thick and is supplied in rolls of one square (3' x 33.3') (0.9m x 10m) and two square (3' x 72.1') (0.9m x 22m). WeatherMaster® Underlayment is self-adhesive and cold-applied. No special adhesives, heat or equipment are necessary to install WeatherMaster® Granular underlayment under normal dry conditions of 45°F or warmer.

WeatherMaster® Granular underlayment provides a secondary layer of waterproofing protection needed to help prevent damage from ice dams and windblown rain. This self-adhering modified bitumen underlayment creates a watertight barrier by sealing to the deck and around nails to provide continuous protection year after year. WeatherMaster® helps protect the entire deck of a properly ventilated roof or just those problem areas where water collects or drainage is slow. And, since it can go under any roofing material from asphalt shingles to tile, you can enjoy maximum protection with the architectural look you want.

Features:

  • Skid resistant surface for better traction and safer application.
  • UV protected surface–45 days exposure.
  • High temperature stability - 200°F.
  • Self-adhesive backing seals directly to the deck.
  • Aggressive bond at low temperatures, 45ºF min.
  • Repositionable at installation.
  • SBS-modified asphalt coating helps seal around nails for a watertight result.
  • Fiberglass mat is stronger and provides better tear resistance than saturated felt.

Benefits:

  • Provides secondary water barrier
  • Extra roofing protection for vulnerable areas. Use for valleys, eaves, flashings, hips, ridges and rakes, and around dormers and skylights.
  • Can be used in new construction or in reroofing requiring a complete tear-off.
  • Provides extra protection under any type of roofing: tile, wood shake, asphalt, slate or metal.
  • Helps extend the life of your roof system.
  • Easy to install—even for do-it yourselfers.
  • Complies with local codes where required
  • May be left on deck and recovered when reroofed.


Atlas offers homeowners double the coverage of their Premium Protection Period on any Atlas Signature Select® Roofing System. This product qualifies for use in the Atlas Signature Select® Roofing System when used in combination with other qualifying Atlas products. For more information please visit: www.AtlasSignatureSelect.com