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.



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 leaks due to water damming in your gutters, wind driven rain, and in the North, damaging ice dams

  • Help Prevent Leaks...
    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

  • Reduce Risk of Costly Repairs...
    Due to staining on interior walls and ceilings

  • Saves Labor...
    Split-back release film makes installation easy

*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