• GAF Lifetime Roofing System includes everything you need to provide reliable, watertight protection for your home

  • GAF factory-certified contractors eliminate the risk your roof will be installed by some fly-by-night contractor

  • GAF has the industries leading warranties backed by North Americas largest roofing manufacturer.
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GAF is your best and safest choice! Here's Why . . .
  • Professional installers have long preferred the rugged, dependable performance that only a GAF roof can offer, and have made our Advanced Protection shingles the #1 brand in North America!
  • Inventors of the Timberline Advanced Protection shingle the #1-selling shingle in North America
  • Rated #1 in shingle quality by contractors and home builders (2009 Hanley-Wood study)
  • Named #1 in innovation for shingles by home builders (Home Improvement Executive study, October 2009)
  • First to pass ASTM D3161 Class F (110 mph) and ASTM D7158 Class H (150 mph) wind ratings on every manufactured shingle (per UL public listing)
  • First to produce an energy-efficient asphalt shingle available in rich colors, called the Cool Color Series (now called Timberline Cool Series)
  • Winner of the Builders Choice Award
  • Premium Designer Shingles have twice received the Architects Choice For Excellence Award
  • Freedom TPO self-adhering roofing systems chosen Product Of The Year by Commercial Building Products magazine
  • Fireshield brand roof restoration system named "Best Product" by the editors of Buildings magazine
So You Need to Reroof Your Home?

Maybe youre not quite sure where to start? Or maybe you have re-roofed your home before.

Your decision to reroof your home may have been the result of seeing a neighbor reroof his or her home. Or maybe youve been experiencing some roofing problems which can no longer be ignored.

Then again, maybe youve decided just to give your home a face lift and a new roof would really enhance the look.

Whatever the reason, you dont want to make any costly mistakes! The Powell Roofing team is here to help.
Roof Repair
Have you experienced damage to your roof from a storm or normal wear and tear? We offer emergency roof repair services to our customers including tarping services and insurance assistance.

Many homeowners suffer through leaks in their roof on rainy days by putting out pots and pans to gather the water. Weve found the reason for this is because they believe they need a new roof and they just dont have the money.

A new roof is not always what a leaking roof might need. It may just be a simple repair and we are the Appleton roof repair company that you need for the job

Ignoring a leaky roof is a lot like delaying repairs on your car or avoiding the dentist, it can lead to more problems later on and can be more expensive to fix. Fix your small problem before it becomes a big problem.

Call us today, at (920) 739-1128!
Roof Maintenance & Inspections
We recommend annual inspections (as a minimum) for every roof system. Far too often, the cause of a roof failure is the absence of proper maintenance and inspection.

Something that starts out small and very repairable when left unchecked, can turn into a very major roof problem.

Periodic visual roof inspections (especially after storms) and routine maintenance to deficient conditions can increase the long term service life of any roof assembly.

To perform an annual inspection, our qualified roof inspectors walk over the entire roof area looking for and photographing all observed deficiencies.

These observations are then noted on an inspection form along with recommended maintenance procedures to the cited deficiencies.


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Material Defect Coverage

100% Coverage Period - 10 yrs. - (3 to 5yrs on 3 tab shingles)
Covers Roofing System? - No, just shingles
Cost of installation labor included - 10 yrs. - (3 to 5 yrs on 3 tab shingles)

Workmanship Coverage

100% coverage period - None
Misapplication of certain flashings covered - No
Installer Certified? - No (Anyone Can Install)
Tear-Off costs Included - No
Disposal costs Included - No

Problem Prevention

Exclusive 40-Point Inspection? - No

Peace of Mind

"Maximum" wind coverage up to 130 MPH - Category 3 Hurricane wind speed available? - Yes (Not on 3 Tab)
Warranty Transferable? - Yes
Free Transfer - Yes
Good Housekeeping Protection - Yes

*Check ltd. warranties for complete coverage and restrictions.

Powell Roofing Images


Powell Roofing Images

Material Defect Coverage

100% Coverage Period - 50 yrs. - (3 to 5yrs on 3 tab shingles)
Covers Roofing System? - Yes, entire system
Cost of installation labor included - Lifetime - (20-30 yrs on 3 tab shingles)

Workmanship Coverage

100% coverage period - 2 yrs (offered by contractor)
Misapplication of certain flashings covered - 2 yrs
Installer Certified? - Yes
Tear-Off costs Included - Yes
Disposal costs Included - Yes

Problem Prevention

Exclusive 40-Point Inspection? - No

Peace of Mind

"Maximum" wind coverage up to 130 MPH - Category 3 Hurricane wind speed available? - Yes (Not on 3 Tab)
Warranty Transferable? - Yes
Free Transfer - Yes
Good Housekeeping Protection - Yes

* Check ltd. warranties for complete coverage and restrictions.

Also note:
  • The word "lifetime" means as long as the original individual owner of a singlefamily 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, warranty term is 40 years.
  • 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 warranty for complete coverage and restrictions.
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Learn the Signs That Your Roof Needs Repair
Dont get caught with sudden, costly repairs. Keep a close eye on your roof and learn how to spot problems before they severely impact your wallet with these 7 danger signs.
1. A leak in the attic.
Powell Roofing ImagesAfter 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 dont 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.
Powell Roofing ImagesWhen 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; mold or mildew growth.
Powell Roofing ImagesIf you see stains or, even worse, mold 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 mold and mildew thrive.
4. Exterior decay, sheathing, and/or siding.
Powell Roofing ImagesPoor 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 vapor 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.
Powell Roofing ImagesIf you see that your shingles are dry or practically break when touched, that means they have reached the end of their useful life and its time to invest in a new roof.
6. Dark, dirty-looking areas on your roof.
Powell Roofing ImagesThis could mean your roof has vegetation, fungus, mold, or algae growth, or that the shingles protective granules have been lost.

This doesnt 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.
Powell Roofing ImagesA 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 its not insulated properly. This moisture can drip down onto the insulation and reduce its effectiveness, potentially increasing energy costs.

Roofing Terms


Algae- Rooftop fungus that can leave dark stains on roofing.

Angled fasteners- Roofing nails and staples driven into decks at angles not parallel to the deck.

APA- American Plywood Association. Tests and sets standards for all varieties of plywoods used in the U.S.

Apron flashing- Metal flashing used at chimney fronts.

ARMA- Asphalt Roofing Manufacturers Association. Organization of roofing manufacturers.

Asphalt- A bituminous waterproofing agent used in various types of roofing materials.

Asphalt concrete primer- Asphalt based primer used to prepare concrete and metal for asphalt sealant.

Asphalt plastic cement- Asphalt based sealant material, meeting ASTM D4586 Type I or II. Used to seal and adhere roofing materials. Also called mastic, blackjack, roof tar, bull.

ASTM-The American Society for Testing and Materials. Organization that sets standards for a wide variety of materials, including roofing.


Back-surfacing- Granular material added to shingles back to assist in keeping separate during delivery and storage.

Blistering- Bubbles or pimples in roofing materials. Usually moisture related. In shingles blisters are either moisture under the material or moisture trapped inside the material.

Blow-offs- When shingles are subjected to high winds, and are forced off a roof deck.

Buckling- When a wrinkle or ripple affects shingles or their underlayments.


Closed-cut valley- A shingle valley installation method where one roof planes shingles completely cover the others. The top layer is cut to match the valley lines.

Cobra- GAFMCs respected brand name for ventilation products.

Corrosion- When rust, rot or age negatively affect roofing metals.

Counter-flashing-The metal or siding material that is installed over roof-top base flashing systems.

Country Mansion & Country Estates-GAFMCs limited lifetime warranty shingle.

Crickets- A peaked water diverter installed behind chimneys and other large roof projections. Effectively diverts water around projections.

Cupping- When shingles are improperly installed over an existing roof or are over-exposed, they form a curl or cup.


Deck- The substrate over which roofing is applied. Usually plywood, wood boards, or planks.

Dormer- A raised roof extending out of a larger roof plane.

Drip-edge- An installed lip that keeps shingles up off of the deck at edges, and extends shingles out over eaves and gutters, and prevents water from backing up under shingles.

Dubl-Coverage Mineral Guard- Roll roofing material with 19" selvage edge for double coverage over roof deck.


Eaves- The roof edge from the fascia to the structures outside wall. In general terms, the first three feet across a roof is termed the eave.

End-laps- When installing rolled products in roofing, the area where a roll ends on a roof, and is overlapped by the next section of rolled material. (underlayments, rolled roofing)

Exposure- The area on any roofing material that is left exposed to the elements.


Fasteners- Nails or staples used in securing roofing to the deck.

FHA-The Federal Housing Authority. Sets construction standards throughout the U.S.

Fiberglass mat- fibers condensed into strong, resilient mats for use in roofing materials.

Flange-Metal pan extending up or down a roof slope around flashing pieces. Usually at chimneys and plumbing vents

Flashing- Materials used to waterproof a roof around any projections through the roof deck.

Flashing cement- Sealant designed for use around flashing areas, typically thicker than plastic cement.


Gable roof- Traditional roof style; two peaked roof planes meeting at a ridge line of equal size.

GAFCant- GAFMC cant strips for deflecting water away from flashing areas. Typically used on low slope roofs.

Golden Pledge- GAFMCs strongest limited warranty for shingles. Americas strongest steep slope warranty.

Grand Sequoia- GAFMC shingle with wood shake appearance.

Grand Slate- GAFMC shingle with slate appearance.

Granules- Crushed rock that is coated with a ceramic coating and fired, used as top surface on shingles.


Hand-sealing- The method to assure sealing of shingles on very steep slopes, in high wind areas, and when installing in cold weather.

High nailing- When shingles are nailed or fastened above the manufacturers specified nail location.

Hip legs- The down-slope ridges on hip roofs.

Hip roof- A roof with four roof planes coming together at a peak and four separate hip legs.


Ice Dam- When a snow load melts on a roof and re-freezes at the eave areas. Ice dams force water to "back-up" a roof and cause leakage.


"L" flashing- Continuous metal flashing consisting of several feet of metal. Used at horizontal walls, bent to resemble an "L".

Laminated shingles- Shingles made from two separate pieces that are laminated together. GAFMC Timberline Series, Country Mansion and Grand Sequoia Shingles. Also called dimensional shingles and architectural shingles.

Laps- The area where roll roofing or rolled underlayments overlap one another during application (see also side laps and end laps).

Low slopes-Roof pitches less than 4/12 are considered low sloped roofs. Special installation practices must be used on roofs sloped 2/12-4/12.


Mansard- A roof design with a nearly vertical roof plane that ties into a roof plane of less slope at its peak.

Mats- The general term for the base material of shingles and certain rolled products.

Modified bitumen- Rolled roofing membrane with polymer modified asphalt and either polyester or fiberglass reinforcement.

Mortar- Mixture of sand, mortar, limestone and water used in bonding a chimneys bricks together.


Nail-guide-line- Painted line on laminated shingles, to aid in the proper placement of fasteners.

Nail-pop- When a nail is not fully driven, it sits up off the roof deck.

Nesting- Installing a second layer of shingles aligning courses with the original roof to avoid shingle cupping.

NRCA- The National Roofing Contractors Association. Respected national organization of roofing contractors.


Open valley- Valley installation using metal down the valley center.

Organic mat- Material made from recycled wood pulp and paper.

Organic Shingles- Shingles made from organic (paper) mats.

OSB- Oriented Strand Board. A decking made from wood chips and lamination glues.

Over-driven- The term used for fasteners driven through roofing material with too much force, breaking the material.

Over-exposed- Installing shingle courses higher than their intended exposure.


Pitch-ratio of the rise of the roof to the span of the roof.

Power vents- Electrically powered fans used to move air from attics and structures.

Plastic cement- Asphalt based sealant. Also called bull, mastic, tar, asphalt cement.

Plumbing vents- Term used to describe plumbing pipes that project through a roof plane. Also called vent stacks.

Prevailing wind- The most common direction of wind for a particular region.


Quarter sized- Term for the size of hand sealant dabs, size of a U.S. 25 piece.


Racking- Method of installing shingles in a straight up the roof manner.

Rake edge-The vertical edge of gable style roof planes.

Release film- The plastic sheet installed on the back of Weather Watch and StormGuard underlayments. Used for packaging and handling. Remove before installation.

Rigid vent- Hard plastic ridge vent material.

Roof louvers- Rooftop rectangular shaped roof vents. Also called box vents, mushroom vents, airhawks, soldier vents.

Roof plane- A roofing area defined by having four separate edges. One side of a gable, hip or mansard roof.


Sawteeth- The exposed section of double thickness on Timberline Series shingles. Shaped to imitate wood shake look on the roof.

Self-sealant- Sealant installed on shingles. After installation, heat and sun will activate sealant to seal the shingles to each other.

Selvage- The non exposed area on rolled roofing. Area without granules. Designed for nail placement and sealant.

Shed roof- Roof design of a single roof plane. Area does not tie into any other roofs.

Shingle-Mate- GAFMCs shingle underlayment. Breather type with fiberglass backing to reduce wrinkles and buckles.

Side-laps- The area on rolled material where one roll overlaps the rolled material beneath it. Also called selvage edge on rolled roofing.

Side-walls- Where a vertical roof plane meets a vertical wall. The sides of dormers etc.

Soffit ventilation- Intake ventilation installed under the eaves, or at the roof edge.

Smart Choice Limited Warranty- GAFMCs standard shingle limited warranty.

Smart Choice System Plus Limited Warranty- GAFMCs next grade of enhanced warranty. Extended coverage for owners.

Starter strip- The first course of roofing installed. Usually trimmed from main roof material.

Steep slope roofing- Generally all slopes higher than 4/12 are considered steep slopes.

Step-flashing- Metal flashing pieces installed at side-walls and chimneys for weather-proofing.

StormGuard- GAFMC waterproof underlayment. Film surfaced rolled underlayment, 1.5 squares coverage per roll.


Tab- The bottom portion of traditional shingle separated by the shingle cut-outs.

Tear-off- Removal of existing roofing materials down to the roof deck.

Telegraphing- When shingles reflect the uneven surface beneath them. Shingles installed over buckled shingles may show some buckles.

Timberline Series- GAFMCs trademark name for laminated wood shake style shingles.

TIMBERTEX- GAFMC enhanced Hip and Ridge Shingles.

Transitions- When a roof plane ties into another roof plane that has a different pitch or slope.


Under-driven- Term used to describe a fastener not fully driven flush to the shingles surface.

Underlayments- Asphalt based rolled materials designed to be installed under main roofing material, to serve as added protection.


Valleys-Area where two adjoining sloped roof planes intersect on a roof creating a "V" shaped depression.

Vapor- Term used to describe moisture laden air.

Ventilation- The term used in roofing for the passage of air from an enclosed space.


Warm wall- The finished wall inside of a structure, used in roofing to determine how to install waterproof underlayments at eaves.

Warranty- The written promise to the owner of roofing materials for material related problems.

Waterproof underlayments- Modified bitumen based roofing underlayments. Designed to seal to wood decks and waterproof critical leak areas.

Weather Stopper Integrated Roofing System- GAFMCs complete roofing system and components.

Weather Watch- GAFMCs granule surfaced waterproof underlayment.

Woven Valleys- The method of installing valleys by laying one shingle over the other up the valley center.

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