GAF Lifetime Roofing System

There's more to a roof than just shingles; let the GAF Lifetime Roofing System protect the integrity of your home. The GAF integrated roofing system utilizes top quality materials to shield your home from wind, rain and other elements that could cause damage and lead to costly repairs. GAF roofing is built with the quality that you can depend on and is backed by a lifetime warranty — ensuring you’re always protected. With options that suit all budgets and designs, GAF takes the hassle out of replacing your existing roof.

The GAF Roofing Difference

A GAF roof is engineered to endure and tested to extremes — including withstanding hurricane-force winds and being blasted with embers and water — to give you peace of mind. Using Duralock™ technology, your shingles won’t come loose, even in the most extreme conditions

Wind Uplift Resistant

GAF Timberline shingles can withstand category 3 hurricane-force winds of up to 246 km/h — even without nails.

Fire and Ember Tested

GAF Timberline shingles can even withstand being blasted with red-hot flaming embers.

Water Resistant

GAF Timberline shingles keep this home dry, even while being soaked with 10 times more water than the heaviest rainstorm ever on record.

Duragrip Strength

With our Duragrip adhesive, we can tow this 10-ton truck with less adhesive than it takes to install 6 GAF shingles.

Components of the GAF Roofing System

Component That Make Up a GAF Roof


1 Leak Barrier

Leak Barrier

A leak barrier under your shingles acts as a first line of defense. It protects vulnerable areas of the roof against leaks caused by wind-driven rain, ice dams, extreme weather, and the natural settling of the roof.

2 Roof Deck Protection/Underlayment

Underlayment/Roof Deck Protection

Protect the roof deck against moisture with a layer of synthetic deck protection between deck and the shingles. Roof deck protection allows moisture to escape from your attic while providing a strong layer of protection against wind-driven rain.

3 Starter Strip Shingles

Starter Strip Shingles

Start smart and save time during installation by using starter strip shingles to reduce waste. They feature a self-seal adhesive to help reduce the risk of shingle blow-off.


4 Install GAF Shingles

Lifetime Roofing Shingles

Install your GAF shingles for their beauty, durability, and affordability. They also come in a variety of colours so whatever your priority - GAF has the right shingle for you.

5 Attic Ventilation

Attic Ventilation

Proper ventilation helps remove excess heat and moisture from the attic, promotes energy efficiency, and can help extend the life of your roof.

6 Hip and Ridge Cap Shingles

Ridge Cap Shingles

Enhance the home’s beauty with matching hip and ridge cap shingles while protecting the highest stress areas of the roof - the hips and ridges.

Lifetime Ltd. Warranty

Shingle & Accessory Ltd. Warranty - Lifetime Ltd Warranty Term

Install Any GAF Lifetime Shingle & At Least 3 Qualifying GAF Accessories & You’ll Automatically Get: A Lifetime ltd. warranty on your shingles and all qualifying GAF accessories!* PLUS Non-prorated coverage for the first 10 years!* To get even stronger coverage, choose a System Plus or Golden Pledge® Ltd. Warranty from a GAF factory-certified contractor.

Speak to an in-store associate for information on our GAF lifetime warranties.

Tips & Tricks for the General Contractor

Looking for professional roofer tips that can help you save time and money while protecting your new roof install? Watch our 9-part series on proper roof installation.

Make your Roof as Water Tight as Possible

Help Protect Against Shingle Blow-offs

Cut Shingles Quickly & More Precisely

Install Ridge Vents with Less Hassle

Be Sure to Cut the Proper Ridge Opening

Save Time Handling Rolls of Leak Barrier

Protect the Roof's Most Vulnerable Areas

Proper Overhang Helps Prevent Blow-Offs

Make Your Valley Installations Water Tight

Common Roof Installation Mistakes

Avoid these common mistakes on your next roofing install.

Prevent Costly Roof Leaks in the Valley

Not Using Drip Edge at the Rakes?

Are You Nailing Shingles the Right Way?

Substituting Cut 3-Tabs for Starter Strips?

Not Guarding Against Ice and Rain?

Wasting Time Using 3-Tabs as Ridge Caps?

Warning Signs You May Need a Roof Replacement

How do you know if there are roof danger signals? Watch these videos to spot potential problems.

1 Excessive energy costs.

A possible cause of higher cooling costs could be insufficient attic ventilation, requiring the cooling system to run excessively. In warm weather, inadequate ventilation will trap hot air in the attic, causing air-conditioning systems to work harder, or leaving your home’s interior hotter and less comfortable. In both hot and cold weather, moisture in the attic can become trapped and condense on the rafters if it’s not insulated properly. This moisture can drip down onto the insulation and reduce its effectiveness, potentially increasing energy costs.

2 Stains on interior ceilings and walls; mould or mildew growth.

If you see stains or, even worse, mould growth inside your home, it may be caused by inadequate or faulty shingle underlayment that is allowing water to seep into the house. Inadequate ventilation could also be the culprit, which causes excessive moisture— conditions in which mould and mildew thrive.

3 Missing, cracked, or curled shingles.

If you see that your shingles are dry or practically break when touched, that means they have reached the end of their useful life and it’s time to invest in a new roof.

4 Dark, “dirty-looking” areas on your roof.

This could mean your roof has vegetation, fungus, mould, or algae growth, or that the shingles’ protective granules have been lost. This doesn’t mean you need to replace your roof, but these stains can reduce curb appeal. Cleaning the shingles is an option, but that could shorten their life. Fortunately, StainGuard® protection is available on many GAF Shingles, including Timberline® Cool Series Shingles, Timberline® Natural Shadow® Shingles, and Timberline® ArmorShield™ II Shingles. (StainGuard® protection is available only on shingles with StainGuard®-labeled packaging. See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions.)

5 Leaking roof

After a strong storm or wind-driven rain, take a look in the attic for signs of leaking. Ice damming can also cause water to enter the house if you don’t have an adequate shingle underlayment or if the flashing (the aluminum or steel used over roof joints, like chimneys and pipes) has deteriorated.

Did You Know?
A way to prolong the life of your shingles is to install proper ventilation. Asphalt shingles should never be installed on flat roofs as it does not have a slope for water to flow away.
Don’t Forget!
Clean up tree debris! A little leaf or a few pine needles are fine, but if they collect and are deep enough to hold moisture, they need to be taken off the roof. Anything that traps moisture will cause mildew to form, block gutters, or cause extra weight on the roof. A rake or air blower can be used to clear the roof, but take care not to damage the shingles.

* The word “Lifetime” means as long as the original individual owner of a single family detached residence (or the second owner in certain circumstances) owns the property where the shingles are installed. For owners/structures (e.g., a church) not meeting above criteria, Lifetime coverage is not applicable. See limited warranty for complete coverage and restrictions. Installer certification is only for installations covered by GAF system warranties. Maximum wind coverage requires special installation. See limited warranty for complete coverage and restrictions.

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