Timberline AS II

Timberline AS II Shingles with UL 2218 Class 4 impact resistance give your roof a fighting chance in hail-prone areas and help protect it against wind and blue-green algae too.

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

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.

Warranties & Technologies

StainGuard Plus Algae Protection Limited Warranty

Protect your roof investment with algae resistance so powerful it allows us to offer a 25-year limited warranty against blue-green algae discoloration on many of our most popular products, including Timberline HDZ Shingles.

WindProven Limited Wind Warranty

When installed with the required combination of four qualifying GAF accessories, GAF shingles with LayerLock technology qualify for the WindProven Limited Wind Warranty with no maximum wind speed limitation.

Layerlock Technology

The StrikeZone nailing area provides up to 99.9% nailing accuracy. It's so easy to hit that a roofer placed 999 out of 1,000 nails correctly in our test.

SBS-Modified Asphalt

Timberline AS II Shingles are made with our proprietary SBS-modified asphalt formulation and pass UL's toughest impact-resistance test UL 2218 Class 4 . That means they can really take a punch from Mother Nature.