GAF Roof Leak Barriers & Ice Dam Protection

"Protect Your Investment And Safeguard Vulnerable Areas"


Film surfaced leak barrier, suitable for application under shingle and metal roofs.


WeatherWatch® XT

Mat surfaced leak barrier with XTra traction, suitable for application under shingle roofs.



Mineral surfaced leak barrier, suitable for application under shingle roofs.

UnderRoof 2

UnderRoof™ 2

Premium leak barrier designed for use under tile roofs.

Leak Barrier

  • Protect Your Property...
    Help prevent wind-driven rain from leaking through the roof deck, or melting ice and snow (caused by ice dams in harsh winter climates) from leaking into property’s interior

  • Add Extra Protection...
    In valleys and at eave and rake edges — the most leak-prone areas of the roof. Strongly recommended for chronic problem areas like skylights, dormers, vent pipes, chimneys, and other flashing areas

  • Won’t Leak...
    Helps ensure a 100% watertight seal

  • Avoid Costly Repairs...
    Due to staining on interior walls and ceilings

  • Better Appearance...
    Fiberglass reinforcement helps resist wrinkling and buckling — lays flatter under shingles

  • Saves Labor...
    Split-back release film peels off in sections, for faster installation and superior property owner value

  • Peace Of Mind...
    Benefits from the same warranty term as the shingles they are applied under, up to a maximum of 30 years*

*See ltd. warranty for complete coverage and restrictions

Get Automatic Lifetime Protection On Your GAF 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