StormGuard® Film‑Surfaced Leak Barrier Specs

      StormGuard® Film‑Surfaced Leak Barrier Docs

      StormGuard® Film‑Surfaced Leak Barrier Videos

      About StormGuard® Film-Surfaced Leak Barrier

      By creating a barrier at the most vulnerable areas of your asphalt shingle or metal roof (at the eaves and rakes, in valleys, around chimneys, etc.), StormGuard® Film-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.  StormGuard® Film-Surfaced Leak Barrier is a key part of the GAF Lifetime Roofing System.2   It’s eligible for Lifetime ltd. warranty when used on Lifetime Shingle roofs2 and it’s an eligible component of GAF residential enhanced warranties.  It’s also covered by up to a 10-year ltd. warranty3 when used with other approved non-asphaltic roof coverings.


      Helps keep water and ice out of the most vulnerable areas of your asphalt shingle or metal roof


      Helps provide excellent wet/dry walkability for installers


      High-temperature compound designed for use with asphalt shingle and most metal roof systems1
      • Code Compliance and Risk Reduction:  Protection against ice dams is required by most building codes4 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
      • Blue Synthetic Surface:  Durable, patterned film surface provides excellent wet/dry traction for installers and is perfect for full-deck application
      • Integral Surface Channels:  Helps move moisture away from the walking surface
      • Cooler to Work on:   The blue surface is cooler to work on (vs. typical black underlayments)
      • Versatile:  250oF high-temperature compound is perfect for use under asphalt shingles and most metal roofing systems1
      • Convenient:  Available in 2.0 square (200 ft.2 [18.58 m2]) rolls - excludes laps

      1The high-temperature compound is suitable for most metal roofing system applications.  For use under copper and zinc or for information on other approved non-asphaltic roofing systems, contact GAF Technical Services at 1-800-ROOF-411.

      2Lifetime 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.

      3See StormGuard® Film-Surfaced Leak Barrier Limited Warranty for Non-Asphaltic Roofing Systems for complete coverage and restrictions. 

      4Always check local building codes for specifications in your area. 


      Where to buy

      Find a GAF distributor near you.

      Find a contractor

      Find a GAF certified contractor near you.

      Customer Service

      Find information on products, warranties, installation, residential and commercial field offices, and more.