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    Timberline® AH Specs

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    Fact: Your roof can represent up to 40% of your home's curb appeal. Improve its look and even its resale value with Timberline® AH Shingles from GAF. The American Harvest Collection with Advanced Protection® Shingle Technology will give you the modern architectural style you want, at a price you can afford, with rugged, dependable performance that only a Timberline® roof can offer. Its custom color palette uses surprising colors that reflect the beauty of America’s heartland. Subtle blends with contrasting colors add even greater dimensionality and beauty to your roof using higher contrast and on-trend colors.

    Popular Colors
    Custom Colors
    Color palette specially designed to add sophistication and charm to your home
    Peak Performance
    Peak Performance
    Advanced Protection® Shingle Technology provides excellent protection for your home
    Tough Protection
    Advanced Stain Resistance
    New patent-pending StainGuard Plus™ Time-Release Technology fights ugly blue-green algae
    • Custom-designed color palette:  Professionally designed color palette featuring subtle blends with contrasting colors that will add sophistication and charm to any home
    • Extra-dimensional:  Optimized construction and advanced color application techniques result in an extra-dimensional look
    • LayerLock™ Technology:  Proprietary technology mechanically fuses the common bond between overlapping shingle layers
    • Up to 99.9% nail placement accuracy: The StrikeZone™ Nailing Area is so easy to hit that a roofer placed 999 out of 1,000 nails correctly in our test1
    • WindProven™ limited wind warranty:  When installed with the required combination of GAF Accessories, Timberline® AH Shingles are eligible for an industry first: a wind warranty with no maximum wind speed limitation2
    • Our legendary Dura Grip™ Sealant:  Pairs with the smooth micro-granule surface of the StrikeZone™ Nailing Area for fast tack. Then, an asphalt-to-asphalt monolithic bond cures for durability, strength, and exceptional wind uplift performance
    • StainGuard Plus™ Algae Protection:  Specially engineered capsules release copper over time for long-lasting algae-fighting power; comes with a 25-year limited warranty against blue-green algae discoloration3
    • High performance:  Designed with Advanced Protection® Shingle Technology Perfect finishing touch: For the best look, use TimberTex® Premium Ridge Cap Shingles or TimberCrest™ Premium SBS-Modified Ridge Cap Shingles4 and Great value — Architecturally stylish but practically priced, with a Lifetime limited warranty5


    Timberline® American Harvest® Shingles just got better!

    The same shingle you know and love now with LayerLock™, which powers the industry's widest nailing area.

    Timberline® AH Shingles | GAF Roofing
    diamond logo for LayerLock Technology

    LayerLock™ Technology

    Introducing the same shingle you know and love, now with LayerLock™ Technology, which powers the industry's widest nail zone and first wind warranty with no maximum wind speed limitation.5



    diamond logo of WindProven Infinite Wind Speed Protection

    WindProven™ Limited Wind Warranty6

    When installed with the required combination of GAF Accessories, Timberline® HDZ™ Shingles are eligible for an industry first: a wind warranty with no maximum wind speed limitation.


    diamond logo of StainGuard Plus Algae Protection

    StainGuard Plus™

    Specially engineered capsules release copper over time for long-lasting algae-fighting power; comes with a 25-year limited warranty against blue-green algae discoloration3


    package of Timberline American Harvest next to package of Timberline AH for comparison

    Seamless Compatibility

    The new Timberline® AH Shingles are compatible with traditional Timberline HD® Shingles for the same look and feel homeowners and contractors rely on for beauty and endurance.8

    As Featured in This Old House Idea House

    GAF’s Timberline®AH Shingles combine texture, dimension, and beauty with exceptional durability to keep the This Old House 2020 Farmhouse safe and looking beautiful for years to come.

    1Results 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.

    215-year WindProven™ limited wind warranty on Timberline® AH 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.

    3StainGuard Plus™ algae protection is available only on shingles sold in packages bearing the StainGuard Plus™ logo. Products with StainGuard Plus™ algae protection are covered by a 25-year limited warranty against blue-green algae discoloration. See GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions.

    4These products are not available in all areas. See www.gaf.com/ridgecapavailability for details.

    5Lifetime 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 the 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.  Lifetime coverage on shingles and accessories requires the use of any GAF Lifetime Shingle and any 3 qualifying GAF Accessories. 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 GAF Roofing System Limited Warranty, see the GAF Shingle & Accessory Limited Warranty.

    6To be mixed on one roof, Timberline® AH Shingles with LayerLock™ Technology and traditional Timberline AH® Shingles must have matching 6-digit codes found on the end of the bundle. When mixed, always use traditional Timberline® AH installation instructions.


    (Note: It is difficult to reproduce the color clarity and actual color blends of these products. Before selecting your color, please ask to see several full-size shingles.)


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    Get automatic Lifetime Protection on your entire GAF roofing system

    When you install any GAF Lifetime Shingle and at least 3 qualifying GAF accessories, you'll automatically get a Lifetime limited warranty on your shingles and all qualifying GAF accessories*.
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