Leak Barriers - Weather Watch XT

WeatherWatch® XT Mat-Surfaced Leak Barrier / Water & Ice Shield

A Quality Leak Barrier Will:

Create a 100% watertight seal that keeps water out at the most vulnerable areas of your roof (at the eaves and rakes, in valleys, around chimneys, etc.).

Good Housekeeping

WeatherWatch® XT, a quality leak barrier, will:

  • Protect your home to prevent costly repairs due to wall or ceiling staining
  • Help prevent leaks due to water damming in your gutters, wind-driven rain, and, in the North, damaging ice dams

WeatherWatch® XT Mat-Surfaced Leak Barrier is a key ­part of the GAF Lifetime Roofing System, and has even earned the prestigious Good Housekeeping Seal.

Don’t Put Your Home At Risk

  • The Codes Are Clear...
    North Area Protection against ice dams is required at eaves wherever the January average temperature is 25®F or lower or where there is a possibility of ice forming in the eaves - i.e., the area labeled "North".

  • But Be Prepared...
    Ice dams can still occur in areas where the average temperature is above 25°F (not to mention wind-driven rain)

  • Avoid The Risks...
    If you are in an area that requires leak barrier protection – and if there is a leak – you could be putting your insurance coverage at risk by not installing it!

Homeowner’s Best Choice

  • Looks Better...
    Fiberglass reinforcement helps resist wrinkling and buckling – lays flatter under shingles

  • Meets Building Codes...
    In the North, where leak barrier MUST be used

  • Peace Of Mind...
    Up to a Lifetime ltd. warranty when used on Lifetime Shingle roofs, (See Details) up to a 25-year ltd. warranty when used on non-Lifetime Shingle roofs, and up to a 12-year ltd. warranty when used with other approved roof membranes.

Professional’s Best Choice

  • Dependable...
    Self-seals around nails or metal roofing fasteners

  • Safer...
    Specially coated surface with added tack for extra traction under foot

  • Saves Labor...
    Dual-side selvage and split-back release film speed installation for greater homeowner value

  • Convenient...
    2.0 square roll size

  • Great For Emergencies...
    Can be left exposed for up to 60 days (steep-slope applications only) if necessary

  • Versatile...
    Weather Watch® Leak Barriers are excellent vapor retarders exceeding ASTM D1970 requirements with a .05* vapor permeance (*Based on internal testing)

Product Specifications (Nominal)

Specification 2.0 Square Roll
Roll length 66.7 ft (20.3 m)
Roll width 36 in (0.9m)
Sq. feet per roll 200 sq ft (18.6 sq m)

Applicable Standards

  • ICC-ES Evaluation Report pending
  • Meets the performance criteria of ASTM D1970
  • UL Classified. See complete marking on product
  • Florida Building Code approved
  • Miami-Dade County Approved

Precautionary Note: Due to the added tack in WeatherWatch® XT, asphaltic residue may be tracked over exposed surface. Protect walking surfaces to avoid staining, especially in hot weather.

Note: See application instructions for complete information.

For low-slope applications and other uses, see www.gaf.com.


All documents are U.S. English unless otherwise noted

Get Automatic Lifetime Protection On Your WeatherWatch XT Leak Barriers and Your Entire GAF Roofing System!

  • A Lifetime ltd. warranty... on your shingles and all qualifying GAF accessories! (See Details)
  • Non-prorated coverage for the first 10 years (See Details)

Professional Installation
GAF Roof Wizard Virtual Home Remodeler

Product Pricing and Where to Buy