1Timberline® AS II Shingles are not warranted to withstand hail damage.

Timberline® AS II — the UL2218, Class 4 impact resistant shingle¹ that can also help protect your roof from wind, and algae discoloration.

The technologies incorporated into Timberline® AS II shingles are the keys to unlocking both the 15-Year WindProven™ Limited Wind Warranty2 and the 25-Year StainGuard Plus™ Algae Protection Limited Warranty3.

  • Timberline® AS II Shingles are made with our proprietary SBS-modified asphalt formulation and pass UL’s toughest impact-resistance test — UL 2218 Class 41. That means they can really take a punch from Mother Nature.

    1Timberline® AS II Shingles are not warranted to withstand hail damage.
    215-year WindProven™ limited wind warranty on Timberline® AS II Shingles requires the use of GAF starter strips, roof deck protection, ridge cap shingles, and leak barrier or attic ventilation. See GAF Roofing System Limited Warranty for complete coverage and restrictions Visit gaf.com/LRS for qualifying GAF products.
    325-year StainGuard Plus™ Algae Protection Limited Warranty against blue-green algae discoloration is available only on products sold in packages bearing the StainGuard Plus™ logo. See GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions and qualifying products.