What Is GAF Grand Sequoia® AS?
GAF Grand Sequoia® AS is a designer shingle that combines the look of rugged wood shakes with enhanced impact resistance. Handcrafted shapes and large tabs give the roof a bold, multi-dimensional profile.
What sets it apart is the asphalt. GAF’s proprietary SBS-modified formulation adds rubber-like flexibility and helps the shingle pass the UL 2218 Class 4 impact test, the highest rating available. That can matter when hail hits your roof.
As a GAF Master Elite contractor, ProShield Roofing can install Grand Sequoia® AS as a complete roofing system. See our residential roofing services, or compare it with GAF Woodland® if you prefer a hand-cut look.
Quick Specs
| Lifespan | Typically 30 to 40 years |
| Installed Cost | Typically $7 to $12 per square foot |
| Wind Rating | ASTM D3161 Class F and ASTM D7158 Class H |
| Impact Resistance | UL 2218 Class 4 |
Grand Sequoia® AS Shingles Options
Grand Sequoia® AS comes in four colors, from deep charcoal to warm Adobe Sunset. Ask us about current availability before you choose.
Features & Benefits
Grand Sequoia® AS is designed for homeowners who want a standout roof with added impact protection.
Improved Impact Durability
Exclusive SBS-modified asphalt blend provides rubber-like flexibility and superior impact resistance.
Potential Cost Savings
Shingles meet UL 2218 Class 4 Impact-Resistance standards and could potentially qualify for insurance savings.
Economical Charm
Handcrafted shapes paired with large tabs produce a multi-dimensional design, offering an elegance and sophistication that stands out from standard shingles.
Warranties & Technologies
These technologies and warranties support the look and performance of Grand Sequoia® AS.
SBS-Modified Asphalt
Grand Sequoia® AS Shingles feature GAF’s proprietary SBS-modified asphalt formulation and pass UL’s rigorous impact-resistance test, UL 2218 Class 4.
StainGuard Plus™ Algae Protection Limited Warranty
Safeguard your roof with exceptional algae resistance. GAF provides a 25-year limited warranty against blue-green algae discoloration on Grand Sequoia® AS Shingles sold in packages bearing the StainGuard Plus™ logo.
Dura Grip™ Adhesive
With Dura Grip™ Adhesive, your roof gains added defense against wind and wind-driven rain.
Lifetime Limited Warranty
By choosing GAF Lifetime Shingles and at least three qualifying GAF accessories, you will benefit from a Lifetime Limited Warranty on your qualifying GAF products.
Warranty and Lifespan
Here is what is covered and what to expect from a Grand Sequoia® AS roof over time.
Manufacturer Warranty
Grand Sequoia® AS carries a transferable Lifetime Limited Warranty when installed with at least three qualifying GAF accessories. The first 10 years include non-prorated material and installation labor coverage. Wind coverage reaches 130 mph with special installation or 110 mph without it. See the GAF warranty guide for full terms.
ProShield Workmanship Warranty
ProShield Roofing is GAF Master Elite certified, which lets qualifying installations carry the GAF Golden Pledge Limited Warranty. It covers Designer Lifetime Shingles and extends non-prorated coverage on defective materials to 50 years. Read a sample Golden Pledge warranty, and ask us which installations qualify.
What “Lifespan” Actually Means
“Lifetime” describes how long warranty coverage runs for an eligible owner, not how long the shingles will last. Designer shingles typically last 30 to 40 years. Real service life depends on ventilation, installation quality, and storm exposure. Learn more about how long a roof lasts.
Pros and Cons
Pros
Wood Shake Look
Large tabs and handcrafted shapes create a rugged, multi-dimensional roof.
Flexible SBS Asphalt
The modified asphalt adds rubber-like flexibility for impact resistance.
Class 4 Impact Rating
It carries the highest UL 2218 rating on labeled packages.
Potential Insurance Savings
A Class 4 rating may qualify for a discount. Read our guide to roof insurance claims.
Cons
Premium Price
It costs more than architectural shingles, though only a fraction of real wood shakes.
Four Colors
The palette is much smaller than the Timberline color range.
130 mph Wind Limit
Coverage stops at 130 mph, while qualifying Timberline systems have no maximum wind speed.
Not a Hail Warranty
Class 4 is a test rating, and GAF does not warranty against hail damage.
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Technical Specifications
| Pieces/Square | 72 |
| Bundles/Square | 4 |
| Nails/Square | 360 |
| Exposure | 5″ |
| Dimensions | 17″ x 40″ |
| Fire Rating | UL Class A (ANSI/UL 790) |
All dimensions are nominal. Specifications and warranty details come from GAF’s Grand Sequoia® AS product page and residential warranty guide.
WHAT YOU NEED TO KNOW
Grand Sequoia® AS Questions
SBS-modified asphalt is a blend that gives a shingle rubber-like flexibility, which helps it resist impact.
Both pass UL 2218 Class 4, but in different ways. The AS version uses SBS-modified asphalt, while standard Grand Sequoia® is made bigger and thicker than an average architectural shingle.
It is designed to resemble rugged wood shakes, using oversized, handcrafted shapes that create depth across the roof.
Designer shingles typically run $7 to $12 per square foot installed. Your price depends on roof size, pitch, and location. Ask about our financing options.
It may. Class 4 shingles can qualify for insurance discounts, but savings depend on your provider and policy.
GAF covers up to 130 mph with special installation, which means six nails per shingle plus starter strips at the eaves and rakes. Without it, coverage is up to 110 mph.