SIGN IN

Hours of Operation: Mon - Fri 8:00am - 8:00pm

Atlas Pro-Cut® HP42® Starter

WeatherMaster® Ice & Water Underlayment is a self-adhesive, composite roofing underlayment that provides a durable, watertight barrier to help prevent ice dams and wind-driven rain. Reinforced with a proprietary fiberglass mat and SBS-modified asphalt, it seals tightly to the roof deck and around nails for long-term protection. Its granular surface offers excellent traction during installation and helps resist UV degradation and weathering over time.


WeatherMaster® Ice & Water Underlayment is a self-adhesive, fiberglass-reinforced roofing layer made with SBS-modified asphalt to provide continuous, watertight protection against ice dams and wind-blown rain. It seals directly to the roof deck and around nails to form a secure barrier, while its granular surface enhances traction and resists UV damage and weathering for long-lasting performance.


Features & Benefits

Performance

  • Both products offer excellent UV protection with Summit 60 providing up to 60 days and WeatherMaster® up to 45–60 days of exposure.
  • They deliver high-temperature stability up to 240°F, ensuring reliable performance in extreme weather.
  • Reinforced fiberglass mats provide superior tear resistance compared to traditional felt underlayments.
  • SBS-modified asphalt coatings seal tightly around nails for watertight protection and feature strong granule adhesion, even at low temperatures.

Safety & Installation

  • Slip-resistant polymer backing on both products enhances installer safety during application.
  • Non-woven top surfaces improve walkability and ease of installation.
  • Both underlayments resist buckling, warping, and cracking for consistent, long-lasting roof protection.

Resistance & Compatibility

  • Engineered to resist mold growth and rot, ensuring durability over time.
  • Water-resistant designs protect roof decks from moisture infiltration.
  • Effective in temperature ranges from -40°F to 240°F.
  • Both are eligible for use in the Atlas Signature Select® Roofing System, providing comprehensive warranty coverage.