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      By creating a barrier at the most vulnerable areas of your asphalt shingle roof (at the eaves and rakes, in valleys, around chimneys, etc.),WeatherWatch® Mineral-Surfaced Leak Barrier helps prevent leaks due to water backing up in your gutters, wind-driven rain, and in the North, damaging ice dams.  It will also help protect your home from expensive wall and ceiling staining from leaks.  WeatherWatch® Mineral-Surfaced Leak Barrier is a key part of the GAF Lifetime Roofing System.1   It’s eligible for Lifetime limited warranty when used on Lifetime Shingle roofs1 and it’s an eligible component of GAF residential enhanced warranties. 

      Leak Protection
      Helps keep water and ice out of the most vulnerable areas of your asphalt shingle roof
      Great Look
      Traditional Mineral Surface
      Designed for use with asphalt shingle roof systems
      Helps Avoid Headaches
      Reduces the risk of costly repairs due to interior wall and ceiling staining from leaks
      • Code Compliance and Risk Reduction:   Protection against ice dams is required by most building codes2 at eaves wherever the January average temperature is 25°F (-4°C) or lower or where there is a possibility of ice forming in the eaves — i.e., the area labeled “North” on the map.  In Southern/warmer climates, leak barriers provide critical protection against wind-driven rain.

      • Strong Protection:  Guards vulnerable areas of your roof including eaves and rakes, in valleys, around chimneys and skylights, and more.
      • Dependable:  Self-seals around nails to help avoid leaks.
      • Fiberglass-reinforced:  Helps resist buckling and wrinkling that can detract from the look of your finished roof.
      • Split-back Release Film:  Peels off in layers for fast installation.
      • Convenient:  1.5 square (150 ft.2 [13.9 m2]) and 2.0 square (200 ft.2 [18.58 m2]) roll - excludes laps.

      1Lifetime refers to the length of warranty coverage provided and means as long as the original individual owner(s) of a single-family detached residence [or the eligible second owner(s)] owns the property where the qualifying GAF products are installed.  For other owners/structures, Lifetime coverage is not applicable.  Lifetime coverage on shingles requires the use of GAF Lifetime Shingles only.  Lifetime coverage on shingles and accessories requires the use of any GAF Lifetime Shingle and any 3 qualifying GAF Accessories.  See GAF Roofing System Limited Warranty for complete coverage and restrictions.  Visit for qualifying GAF products. For installations not eligible for the GAF Roofing System Limited Warranty, see the GAF Shingle & Accessory Limited Warranty.


      2Always check local building codes for specifications in your area.
      1.5 Square Roll
      Width36" (.914 m)
      Roll Lengths50 ft. (15.24 m)
      Square Feet Per Rolls1.5 squares/roll - 150 sq. ft. (13.9 m²) excludes laps
      2.0 Square Roll
      Width36" (.914 m)
      Roll Lengths66.7 ft. (20.33 m)
      Square Feet Per Rolls2 squares/roll - 200 sq. ft. (18.58 m²) excludes laps

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