Timberline® AS II Shingles | Big League Roofers

Made with Proprietary SBS-Modified Asphalt Formulation

Timberline® ArmorShield II Shingles are pass UL’s toughest impact-resistance test—UL 2218 Class 4.

Timberline^® ArmorShield II — the UL 2218, Class 4 impact resistant shingle that provides protection and potential insurance savings.

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.

These shingles feature revolutionary GAF Time-Release Algae-Fighting Technology to help protect against blue-green algae stains, backed by a 25-year StainGuard Plus™ Algae Protection Limited Warranty. They’re also eligible for the WindProven™ Limited Wind Warranty with no wind speed limit when installed with four required accessories.

This product can be used to comply with certain FORTIFIED Roof™ requirements. Visit gaf.com/fortified and current FORTIFIED Home™ Standard available at fortifiedhome.org for details. Applicable in the U.S. only.

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

These 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.

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A Roofing System Built to Protect

Timberline AS^® shingles offer a combination of beauty and benefits that go beyond. High-performance technology enhances the shingle at its core and achieves UL 2218 Class 4 impact-resistance rating. When installed as a complete roofing system, it helps reduce risk, improve roof performance, and support a longer-lasting result.

Key components of a complete shingle roofing system:

Roof deck preparation
Underlayment
Leak barriers / ice barrier protection
Starter strips
Field shingles
Hip & ridge caps
Ventilation components
Edge details and accessory components

UL2218 Impact Testing

UL 2218 impact testing involves dropping various sized steel balls onto tested materials from different heights and evaluating whether there are any cracks on the back surface of the product. Products that withstand the impact of a 1.75-inch steel ball dropped from 17 feet receive a UL 2218 Class 3 rating while products that withstand the impact of a 2-inch steel ball dropped from 20 feet receive the highest rating, UL 2218 Class 4.