About WeatherWatch® Ice & Water Leak Barrier

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. 


How does WeatherWatch® Protect your Roof?

By Creating a barrier at the most vulnerable areas of your asphalt shingle (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.

  • 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”.  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:  Available in 1.5 square (150ft.2 [13.9 m2) and 2.0 square (200 ft.2 [18.58 m2]) roll size.

  • This product can be used to comply with certain FORTIFIED Roof™ requirements. Visit gaf.com/fortified and current FORTIFIED Home™ Standard available at fortifiedhome.org for details. Applicable in the U.S. only.


    Lifetime 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 gaf.com/LRS 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.

    Key Benefits

    Help protect your home and roof system from wind-driven rain and damaging ice dams
    GAF residential roofing warranty diamonds

    Get automatic Lifetime Protection on your entire GAF roofing system

    When you install any GAF Lifetime Shingle and at least 3 qualifying GAF accessories, you'll automatically get a Lifetime limited warranty on your shingles and all qualifying GAF accessories*.
    *See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions. The word “Lifetime” refers to the length of coverage provided by the GAF Shingle & Accessory Ltd. Warranty , and means as long as the original individual owner(s) of a single-family detached residence [or the second owner(s) in certain circumstances] owns the property where the shingles and accessories are installed. For owners/structures not meeting the above criteria, Lifetime coverage is not applicable. Lifetime ltd. warranty on accessories requires the use of at least three qualifying GAF accessories and the use of Lifetime Shingles.

    Product Documentation