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 That Make Up a GAF Roof

Component That Make Up a GAF Roof


1 Leak Barrier

Leak Barrier

Your first line of defense. This gives you excellent protection from both extreme weather and the natural settling of the roof.

2 Underlayment/Roof Deck Protection

Underlayment/Roof Deck Protection

Protects the roof deck against moisture by allowing it to escape from your attic while still providing you excellent protection against driving rain.

3 Starter Strip Shingles

Starter Strip Shingles

Save time during installation, eliminate waste and reduce shingle blow-off with starter strip shingles.


4 Lifetime Roofing Shingles

Lifetime Roofing Shingles

Advanced Protection® Shingle technology features light-weight performance in a wide variety of styles.

5 Attic Ventilation

Attic Ventilation

Helps to remove excess heat and moisture from your attic, saving you energy and extending the life of your roof.

6 Ridge Cap Shingles

Ridge Cap Shingles

These distinct cap shingles add beauty to your roof and help guard against leaks at 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

Watch our 6-part series on proper roofing installation.

Leak Barrier Installation Over Pipes

Improve Release in Cold or Warm Weather

Proper Over Hanging at Eaves

How to Make Cuts at the Valley

Using Deck Protection to Guide Cuts

Cutting Ridge Opening

7 Signs You Need a New Roof

1 A Leak in the Attic

A Leak in the Attic

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.

2 Blistering or Peeling Interior or Exterior Paint

Blistering or Peeling Interior or Exterior Paint

When paint starts to peel off, the cause is likely trapped moisture in the house due to excessive temperature or high humidity from poor attic ventilation. The air in the attic needs to flow freely from the soffit to the ridge to reduce humidity. Make sure there is a vent in areas such as the kitchen or bathroom. Dryers should vent outside.

3 Stains on Interior Ceilings and Walls; Mould or Mildew Growth

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.

4 Exterior Decay, Sheathing, and/or Siding

Exterior Decay, Sheathing, and/or Siding

Poor attic ventilation is again a possible cause, but any condition that results in excess moisture can contribute to decay. One way to combat the problem is to put a vapour barrier between the insulation and the inside of the house, which can reduce the amount of moisture that goes into a wall and help the moisture escape from the wall.

5 Missing, Cracked, or Curled Shingles

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.

6 Dark, “dirty-looking” Areas on Your Roof

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.)

7 Excessive Energy Costs

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.

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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