Timberline® ArmorShield II — the UL 2218, Class 4 impact resistant shingle1 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.2 They’re also eligible for the WindProven™ Limited Wind Warranty3 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.

Fortified roof logo


This product has earned the Good HouseKeeping Seal.

Good Housekeeping seal of approval for this GAF roof shingle


1Timberline® AS II Shingles are not warranted to withstand hail damage.
225-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.
315-year WindProven™ Limited Wind Warranty covers GAF shingles with LayerLock® Technology only and 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. For installations not eligible for the WindProven™ Limited Wind Warranty, see GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions.

Features and Benefits

Warranties & Technologies

¹25-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.
²15-year WindProven™ Limited Wind Warranty on Timberline® Shingles with LayerLock® Technology 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. For installations not eligible for the WindProven Limited Wind Warranty, see GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions.
³ Results based on study conducted by Home Innovation Research Labs, an independent research lab, comparing installation of Timberline HD® Shingles to Timberline HDZ® Shingles on a 16-square roof deck using standard 4-nail nailing pattern under controlled laboratory conditions. Actual results may vary.
These shingles are not warranted to withstand hail damage.
Aerial view of a house featuring a roof made with Timberline ASII shingles by GAF.

Get the brochure

Learn about the whole Timberline® ArmorShield™ II story when you download our brochure. See colors on a wide variety of home styles, and learn how these shingles can help provide protection and durability.
Hands bending a strip of Timberline ArmorShield II shingles, showing how flexible and durable it is.

How do Timberline® AS II shingles work?

Our proprietary SBS polymer-modified asphalt technology helps make asphalt more durable, rubber-like, and super-flexible — to help reduce stress when impacted. It results in a shingle with excellent flexibility and durability, plus increased impact resistance.
Illustration showing how a Class 4 shingle passes an impact-resistance test while a standard shingle fails.

UL 2218 Class 4 Impact-Resistance Test

A 2" steel ball is dropped twice from a 20-foot height onto various target locations to evaluate the shingles' ability to withstand impact. On a standard shingle, the test results show evidence of visible ruptures or cracks through the shingle immediately after impact, indicating a failure. A Class 4 shingle passes the test with no evidence of ruptures or cracks through the shingle immediately after impact.
A house with a roof built with GAF Energy Timberline Solar Roofing shingles.

Flexibility that enhances weather resistance

Timberline® AS II’s rubber-like SBS modified asphalt provides excellent flexibility that enhances resistance to cracking and allows AS II shingles to lay flatter in colder temperatures* when compared to our standard asphalt shingle. AS II's proprietary SBS-modified asphalt provides excellent granule adhesion per ASTM testing standards**. This makes Timberline® AS II shingles an easy to handle and dependable option for use in varying climates. Learn more about ArmorShield II and severe weather on GAF's blog.
*In temperatures of 40℉ or higher.
**Testing based on ASTM D4977 granule adhesion test

Specs & Codes

Specifications
(All Dimensions Are Nominal)
Pieces/Square 64
Bundles/Square 3
Nails/Square¹ 256
Exposure 5 5/8"
Dimensions 13 1/4" x 39 3/8"
Applicable Standards & Protocols
  • Fire - UL Listed to ANSI/UL 790 Class A
  • Wind - ASTM D7158, Class H
  • Wind - ASTM D3161, Class F
  • National - ASTM D3018, Type 1
  • National - ASTM D3462**
  • National - Classified in accordance with ICC-ES AC438
  • Regional - State of Florida Approved
  • Regional - Texas Department of Insurance Listed
  • Regional - ICC-ES ESR- 1475****
  • Regional - ICC-ES ESR- 3267
  • Passes UL 2218 Impact-Resistance Test with Class 4 Rating (highest possible)*
  • Regional - CSA A123.5******
*Timberline® AS II Shingles are not warranted to withstand hail damage.
**ASTM D3462 - Periodically tested by independent and internal labs to ensure compliance with ASTM D3462 at time of manufacture. Applies to only some plants that make Royal Sovereign® Shingles and Marquis WeatherMax® Shingles. Applies to White only for Royal Sovereign® Shingles.
****ICC-ES ESR- 1475 - Applies to some plants only that make Royal Sovereign® Shingles and Marquis WeatherMax® Shingles. Applies to White only for Royal Sovereign® Shingles.
******CSA A123.5 - Applies to some plants only that make Timberline HDZ®, Timberline® NS, and Timberline AS II®.

Product Documentation

Similar Shingles You May Be Interested In

  • Shingle Type
  • Shingle Construction
  • Made in the USA With Domestic and Imported Materials
  • Lifetime Limited Warranty†
  • WindProven Limited Warranty¹
  • LayerLock® Technology
  • Algae Protection
  • Cool Roof Rating
  • Impact Resistance Rating
  • Timberline® AS II Image

    Timberline® AS II

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  • Timberline Lifetime Shingles
  • Timberline architectual shingle icon
  • checkmarl
  • checkmarl
  • checkmarl
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  • 25-year StainGuard Plus™ Limited Warranty
  • Class 4

Frequently Asked Questions

The AS in GAF Timberline® AS II Shingles stands for ArmorShield. They’re named as such due to their enhanced impact-resistance rating, passing the UL 2218 Class 4 Impact-Resistance Test.1

1 Only products sold in packages bearing the UL 2218 Class 3 or Class 4 PRI Validation Program statement are rated for Class 3 or Class 4 impact resistance, respectively. Testing performed under controlled laboratory conditions by Certerra Analytical - PRI. GAF makes no express or implied warranty about the impact performance of these products against hail. Hail damage is not covered under the limited warranty. See GAF Shingle and Accessory Limited Warranty available at gaf.com/warranties for complete coverage and restrictions.

GAF Timberline® AS II Shingles are made with proprietary SBS-modified asphalt to pass the UL 2218 Class 4 Impact-Resistance Test.1

1 Only products sold in packages bearing the UL 2218 Class 4 PRI Validation Program statement are rated for Class 4 impact resistance, respectively. Testing performed under controlled laboratory conditions by Certerra Analytical - PRI. GAF makes no express or implied warranty about the impact performance of these products against hail. Hail damage is not covered under the limited warranty. See GAF Shingle and Accessory Limited Warranty available at gaf.com/warranties for complete coverage and restrictions.

SBS polymer–modified asphalt technology helps protect your home from the elements. Polymer modification makes asphalt more durable, rubber-like, and super flexible to help reduce stress when impacted. When this material is used to make roofing shingles, it results in a shingle with excellent flexibility and increased impact resistance.

Though both pass the UL 2218 Class 4 Impact-Resistance Test,1 they achieve it in different ways.

GAF Timberline® AS II Shingles are made with proprietary SBS-modified asphalt formulated to help protect your home from the elements. This polymer modification makes asphalt more durable, rubber-like, and super flexible to help reduce stress when impacted.

GAF Timberline UHDZ® Shingles feature UltraMat Technology, a high-performance fiberglass mat technology that enhance the shingle at its core.

  • Aesthetically, Timberline UHDZ® Shingles also feature Dual Shadow Lines, thanks to proprietary granule technology and unique color blends to help your roof look its best from any angle, any time of day.
  • Timberline® AS II Shingles offer a 25-year limited warranty2 against blue-green algae discoloration, whereas Timberline UHDZ® Shingles have 10% more GAF time-release algae-fighting technology, allowing us to extend that warranty to 30 years.2


1 Only products sold in packages bearing the UL 2218 Class 4 PRI Validation Program statement are rated for Class 4 impact resistance, respectively. Testing performed under controlled laboratory conditions by Certerra Analytical - PRI. GAF makes no express or implied warranty about the impact performance of these products against hail. Hail damage is not covered under the limited warranty. See GAF Shingle and Accessory Limited Warranty available at gaf.com/warranties for complete coverage and restrictions.

2 25-year StainGuard Plus™ and 30-year StainGuard Plus PRO™ Algae Protection Limited Warranties (as indicated) against blue-green algae discoloration are available only on products sold in packages bearing the StainGuard Plus™ and/or StainGuard Plus PRO™ logos. See GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions.

Because GAF Timberline® AS II Shingles are made with proprietary SBS-modified asphalt and pass the UL 2218 Class 4 Impact-Resistance Test,1 they may qualify for insurance discounts.2

1 Only products sold in packages bearing the UL 2218 Class 4 PRI Validation Program statement are rated for Class 4 impact resistance, respectively. Testing performed under controlled laboratory conditions by Certerra Analytical - PRI. GAF makes no express or implied warranty about the impact performance of these products against hail. Hail damage is not covered under the limited warranty. See GAF Shingle and Accessory Limited Warranty available at gaf.com/warranties for complete coverage and restrictions.
2 Insurance discounts may not be available in your area. Where available, insurance discounts may vary. Contact your insurance provider for information.

GAF Timberline® AS II Shingles come in some of GAF’s most popular colors, including Barkwood, Weathered Wood, Charcoal, and Pewter Gray. However, they’re also available in Hickory, Shakewood, and Slate.

Check out our Virtual Home Remodeler to see what each shingle style and color looks like on your home. Please note that picking the right shingle color for your home is important. Computer and smartphone screens may represent image colors differently. So, once you've selected your favorite colors, be sure to ask your contractor for shingle samples to see how they'll look in real life.

GAF Timberline UHDZ® Shingles offer powerful warranties such as:

  • Lifetime Limited Warranty – Timberline® AS II Shingles come with a Lifetime Limited Warranty against manufacturing defects
  • StainGuard Plus Algae Protection Limited Warranty – Timberline® AS II Shingles have a 25-year limited warranty against blue-green algae discoloration1


In addition to these warranties, Timberline® AS II Shingles can also qualify for the WindProven Limited Wind Warranty when installed with four required GAF accessories, offering 15-year infinite wind speed protection.2

Lifetime 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 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. See the GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions. Visit gaf.com/LRS for qualifying GAF products.

1 25-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. 

2 15-year WindProven Limited Wind Warranty covers GAF shingles with LayerLock® Technology only and 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. For installations not eligible for the WindProven Limited Wind Warranty, see GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions.

GAF Timberline® AS II’s rubber-like SBS-modified asphalt provides excellent flexibility that enhances resistance to cracking and allows AS II shingles to lay flatter in colder temperatures1 when compared to our standard asphalt shingle. AS II's proprietary SBS-modified asphalt provides excellent granule adhesion per ASTM testing standards.2 This makes Timberline® AS II Shingles an easy to handle and dependable option for use in varying climates.

1 In temperatures of 40℉ or higher.
2 Testing based on ASTM D4977 granule adhesion test.

The cost of GAF Timberline® AS II Shingles can vary as roofing contractors consider many variables when preparing your roof cost estimate, including:

  • Home size – The size of your roof is the biggest cost factor. Cost per square usually includes materials and installation.
  • Slope and pitch – The pitch and complexity of the roof may influence the roofing materials selected, which will also impact cost.
  • Location – The area you live in — its cost of living, climate, local building codes and permit requirements — are variables that also factor into the cost of your new roof.


To understand replacement costs specific to your roof, your preferences, your budget, and your goals, find a contractor near you today. Contractors seeking pricing should contact their Territory Manager or distribution partner for more information.

Homeowners interested in having GAF Timberline® AS II Shingles installed on their roof should find a contractor in their area to see several full-size shingle samples, learn more information, and get an accurate estimate.

Contractors interested in installing Timberline® NS Shingles on their customers’ homes can purchase them from specialized roofing and building supply distributors as well as major home improvement retailers like The Home Depot and Lowe’s. Contact your local Territory Manager to determine the best solution for you.