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Roofing Warranty Guide · Northern Virginia

Roofing Warranties in Northern Virginia — What Every Homeowner Needs to Know

Understanding roofing warranties before you hire a contractor can save you thousands. This guide covers workmanship warranties, manufacturer warranties, what each covers, what voids them, and what American Group Construction includes on every roof replacement.
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Up to 25-Year Workmanship Warranty

Backed by American Group Construction

GAF Certified Plus™ Installer

Silver Pledge warranty eligible

GAF Lifetime† Manufacturer Warranty

On qualifying installations

Transferable Coverage

To second owner within first 20 years

The Basics

The Two Types of Roofing Warranties — and Why You Need Both

Most homeowners don’t realize that a roofing warranty is not a single thing. There are two completely separate warranties on any properly installed roof, and a problem could fall under either one. Knowing the difference before you hire is one of the most important steps you can take to protect your investment.

Warranty Type 1

Workmanship Warranty — Covers the Installation

Issued by the roofing contractor. Covers defects that arise from how the roof was installed — improper flashing, poor sealing, incorrect fastening, or any error made during the installation process itself.

  • If the roof leaks because of how it was put on, this is the warranty that applies
  • Only as good as the contractor standing behind it
  • Most contractors offer 1 to 5 years — some offer none at all
  • American Group Construction offers up to 25 years
Ask every contractor: “How long is your workmanship warranty and is it in writing?”

Warranty Type 2

Manufacturer Warranty — Covers the Materials

Issued by the shingle or materials manufacturer. Covers defects in the products themselves — shingles that fail, delaminate, or deteriorate because of a manufacturing problem.

  • If the shingles themselves are defective, this is the warranty that applies
  • Coverage level depends on the contractor’s certification status
  • Higher-tier warranties require certified contractor installation
  • GAF Silver Pledge requires Certified Plus status — which American Group Construction holds
Ask every contractor: “How long is your workmanship warranty and is it in writing?”

What American Group Construction Provides

Warranty Coverage on Every American Group Construction Roof Replacement

Every roof replacement by American Group Construction comes with both warranty types — workmanship and manufacturer — providing complete coverage from installation through the life of the roof.

Combined Coverage on Every Qualifying Replacement

Up to 25-Year Workmanship + GAF Lifetime Manufacturer Warranty

Two warranties. Every qualifying replacement. One contractor accountable for both.

American Group Construction Workmanship Warranty

Up to 25 Years — Backed Directly by American Group Construction

  • Covers all installation defects — flashing, sealing, fastening, and workmanship throughout
  • If a problem develops because of how the roof was installed, American Group Construction stands behind it
  • One of the strongest workmanship warranties available in Northern Virginia
  • Provided in writing with every completed project/li>

GAF Silver Pledge™ — Manufacturer Warranty

Lifetime Coverage on Materials — Available Through Certified Plus Installers Only

  • Lifetime† on manufacturing defects — 50-year non-prorated Smart Choice® period
  • WindProven™ — no maximum wind speed restriction on qualifying installations
  • 25-year algae protection (HDZ) or 30-year algae protection (UHDZ)
  • Covers misapplication errors within the first two years
  • Transferable once to a second owner within the first 20 years
Why both warranties matter: A manufacturer warranty covers the materials. A workmanship warranty covers the installation. Both are necessary for complete protection — and the workmanship warranty is only as good as the contractor standing behind it. When a contractor offers up to 25 years on workmanship alongside a Lifetime† GAF manufacturer warranty, the homeowner is covered from every angle.
Full GAF warranty details → GAF Roofing Products page

Warranty Comparison

How American Group Construction's Warranty Compares to the Industry Standard

Most Northern Virginia homeowners don’t know what to ask for when comparing roofing warranties. This table shows what typical contractors offer versus what American Group Construction provides on every qualifying replacement.

Warranty Element Industry Typical American Group Construction
Workmanship warranty length 1 to 5 years Up to 25 years
Manufacturer warranty level Standard shingle warranty only GAF Silver Pledge (Certified Plus required)
Wind coverage Up to 130 mph (standard install) No maximum wind speed (WindProven™)
Algae protection 10 years or none 25 to 30 years depending on shingle
Workmanship warranty in writing Not always provided ✓ Written with every completed project
Transferable to new owner Rarely ✓ Once, within first 20 years
Misapplication coverage Not typically included ✓ First two years (GAF Silver Pledge)
GAF warranty registration handled Left to homeowner ✓ Handled by American Group Construction

Regional Context

How Northern Virginia's Climate Affects Your Roofing Warranty

Northern Virginia experiences one of the more demanding climate profiles for roofing in the mid-Atlantic. Four distinct seasons — including hot humid summers, severe thunderstorm seasons, and winter freeze-thaw cycles — create conditions that test roofing materials and installation quality year-round. Understanding how each season affects your roof helps you recognize warranty-relevant issues early.

Summer

Heat, Humidity, and Thunderstorm Season

Northern Virginia summers bring sustained heat, high humidity, and frequent severe thunderstorms. Prolonged heat accelerates granule loss and shingle aging. Inadequate attic ventilation allows heat to build up under the roof deck, which can prematurely age shingles and void manufacturer warranty coverage. Proper Cobra® ridge vent installation — part of every American Group Construction complete system — addresses this directly.

Fall

Wind Events and Debris Accumulation

Fall brings wind events and heavy leaf accumulation. Wind damage is a warranty consideration — standard warranties cover wind up to 130 mph with special installation, while WindProven™ installations have no maximum speed restriction. Debris accumulation in valleys and gutters can cause water backup and is a common source of leak claims. These leaks are typically installation or maintenance issues, not material defects.

Winter

Ice Dams and Freeze-Thaw Cycles

Northern Virginia winters create conditions for ice dam formation — ice buildup at the eave line that forces water under shingles. Ice dam leaks are covered by warranty only in areas protected by a GAF leak barrier (WeatherWatch® or StormGuard®). Areas without leak barrier coverage are excluded from ice dam claims. Every American Group Construction complete system includes ice and water barriers at all vulnerable areas.

Spring

Hail Season and Post-Winter Inspection

Spring brings the region’s primary hail season. Standard roofing warranties do not cover hail damage — that is a homeowner’s insurance matter, not a warranty claim. However, Class 4 impact-rated shingles (Timberline UHDZ®) may qualify for insurance discounts in many jurisdictions. Spring is also the right time for a post-winter roof inspection to identify any freeze-thaw damage before it develops into a larger issue.

Know the Difference

Warranty Differences: New Construction vs. Roof Replacement

Whether you are replacing an existing roof or installing roofing on a new home, the warranty structure is similar — but there are important differences in how the coverage applies and what qualifies.

New Construction

Roofing on a New Build

On a new construction home, the GAF Lifetime† manufacturer warranty applies as long as qualifying materials and accessories are used. The workmanship warranty issued by the installing contractor begins on the date of installation.
  • Warranty starts from installation date — not the date the home is purchased
  • If the builder uses a non-certified installer, GAF Silver Pledge coverage may not be available
  • New homeowners should request warranty documentation from the builder at closing
  • If the builder’s warranty term has lapsed, the manufacturer warranty on materials may still be active
  • American Group Construction can inspect and document existing warranty status on homes you are purchasing

Roof Replacement

Replacing an Existing Roof

On a replacement, the new warranty begins on the date the new roof is installed — completely separate from any prior warranty on the old roof. The installing contractor’s workmanship warranty and the manufacturer warranty both start fresh.

  • Prior roof warranty does not carry over — a full replacement starts new coverage
  • Deck condition must be addressed before installation for full warranty to apply
  • Existing accessories such as ventilation may need to be updated to qualify for complete system warranty
  • American Group Construction provides full system installation to qualify every project for Silver Pledge coverage
  • GAF warranty registration must be completed within 45 days of the new installation date

Common Confusion

Roofing Warranty vs. Homeowner's Insurance — What's the Difference?

One of the most common points of confusion for homeowners is understanding when to file a warranty claim versus an insurance claim. They cover different events and involve completely different processes.

Roofing Warranty Covers

Defects in Materials or Installation

  • Manufacturing defects in shingles, underlayment, or accessories
  • Installation errors by the roofing contractor
  • Wind damage up to the warranty’s rated speed (or unlimited with WindProven™)
  • Algae discoloration on qualifying shingles
  • Ice dam leaks in areas with GAF leak barrier installed
Warranty claims go to the contractor (workmanship) or the manufacturer (materials). American Group Construction handles all workmanship warranty service requests directly.

Homeowner's Insurance Covers

Sudden and Accidental Damage

  • Hail damage — regardless of shingle impact rating
  • Wind damage from named storms or events beyond warranty coverage
  • Falling trees or debris impact
  • Fire damage
  • Damage caused by third-party contractors working on the roof
Insurance claims go to your homeowner’s insurance carrier. American Group Construction provides detailed damage documentation and estimates to support insurance claims throughout Northern Virginia.

Protect Your Coverage

What Can Void a Roofing Warranty in Northern Virginia

Understanding what voids a warranty is just as important as knowing what it covers. These are the most common ways homeowners unknowingly invalidate their roofing warranty.

Inadequate Attic Ventilation

Poor ventilation causes heat and moisture buildup that deteriorates shingles prematurely. GAF warranties specifically exclude damage from inadequate ventilation — and it is not considered an installation error covered by workmanship warranty.

Third-Party Roof Work

Any work performed on the roof after installation by another contractor — HVAC companies, solar installers, satellite technicians — can void warranty coverage for areas disturbed. Always notify American Group Construction before allowing any third party on the roof.

Installing Over Damaged Decking

New shingles installed over water-damaged or rotted decking will not perform to spec and can void the manufacturer warranty. American Group Construction inspects and replaces compromised decking before installing new materials on every project.

Pressure Washing the Roof

High-pressure washing strips granules from shingles and can void algae protection warranties. Low-pressure washing with manufacturer-approved cleaners is the correct method for any roof cleaning.

Hail Damage (Warranty Exclusion)

Standard roofing warranties do not cover hail damage — that is a homeowner’s insurance matter. Class 4 impact-rated shingles (Timberline UHDZ®) may reduce insurance premiums but do not provide warranty coverage for hail events.

Failure to Register Within 45 Days

The GAF Silver Pledge warranty must be registered within 45 days of installation or enhanced coverage may not be in effect. American Group Construction handles GAF warranty registration as part of every project completion — homeowners do not need to manage this themselves.

RegistrationOur Process

How GAF Warranty Registration Works

The GAF Silver Pledge warranty requires registration to be fully activated. American Group Construction handles this process on behalf of every homeowner as part of project completion — but understanding how it works helps you verify your coverage is in place.

1

Free Roof Inspection

Shingles, flashing, fascia, soffit, gutters, and decking assessed with photos. Honest recommendation — repair or replacement — before anything is sold.

2

Written Estimate

Full materials, labor, and timeline with no vague line items. Hidden damage found during tear-off is discussed and approved before any additional work proceeds.

3

Material Selection

Choose from GAF Timberline HDZ® (23 colors) or UHDZ® (8 colors, Class 4 impact). Physical samples brought to the inspection for accurate color review.

If you had a previous roof replacement and are unsure whether your GAF warranty was registered:

Contact American Group Construction. We can help verify registration status and advise on coverage for existing installations.

Full GAF product and warranty details →

Before You Hire

Questions to Ask Every Roofing Contractor About Warranties

Most homeowners don’t know what to ask about warranties when comparing roofing contractors. These are the questions American Group Construction recommends asking every contractor before signing a contract — and the answers you should expect from a qualified installer.

1

How long is your workmanship warranty?

Expect: A written commitment of at least 5 years. American Group Construction offers up to 25 years.

2

Is the workmanship warranty in writing?

Expect: Yes, always. A verbal warranty is not enforceable. If a contractor won’t put it in writing, walk away.

3

How long is your workmanship warranty?

Expect: Certified Plus or Master Elite. Lower certification levels do not qualify for the Silver Pledge warranty tier.

4

Will you install the complete GAF roofing system?

Expect: Yes — deck protection, leak barriers, starter strips, ridge cap, and ventilation are all required for full warranty qualification.

5

Will you handle GAF warranty registration?

Expect: Yes. Registration must occur within 45 days of installation. Homeowners should not be left to manage this themselves.

6

Will you inspect and replace damaged decking before installation?

Expect: Yes. Installing over damaged decking voids the manufacturer warranty and shortens the life of the new roof.

7

Is the warranty transferable if I sell the home?

Expect: The GAF Silver Pledge is transferable once within 20 years. Ask if the workmanship warranty is also transferable and under what conditions.

8

How do I submit a warranty claim if I have a problem?

Expect: A clear answer with a direct contact. Workmanship claims go to the contractor. Materials claims go to GAF. Both processes should be explained before you sign.

Warranty Claims

How to File a Roofing Warranty Claim

If you experience a roofing problem after an American Group Construction replacement, the process depends on whether the issue is a workmanship defect or a materials defect.

1

Identify the Issue

Determine whether the problem appears to be an installation issue (flashing, sealing, fastening) or a materials issue (shingle failure, delamination, algae staining). This determines which warranty applies.

2

Document Before Any Repairs

Photograph the issue thoroughly before any temporary repairs are made. Keep your original warranty certificate and project paperwork. Premature repairs made without notifying the warranty provider can forfeit coverage.

3

For Workmanship Issues — Contact American Group Construction

Contact American Group Construction directly to submit a warranty service request. Our team will assess the issue and determine whether it falls under the workmanship warranty coverage.

4

For Materials Issues — GAF Warranty Process

GAF materials warranty claims are filed directly with GAF. You must notify GAF within 30 days of discovering the problem. American Group Construction can advise on the process and provide documentation from the original installation to support your claim.

Submit a Warranty Service Request →

Frequently Asked Questions About Roof Replacement

What is the difference between a workmanship warranty and a manufacturer warranty on a roof?

A workmanship warranty is issued by the roofing contractor and covers defects in how the roof was installed — improper flashing, sealing, or fastening. A manufacturer warranty is issued by the materials company and covers defects in the products themselves. Both are necessary for complete protection. American Group Construction provides both on every qualifying replacement — up to 25 years on workmanship and a GAF Lifetime† manufacturer warranty.

How long should a workmanship warranty be on a roof replacement?

Most Northern Virginia roofing contractors offer 1 to 5 years on workmanship. Some offer no written workmanship warranty at all. American Group Construction offers up to 25 years — one of the longest available from a residential roofing contractor in the region. Always get the workmanship warranty in writing before signing any contract.

What does the GAF Silver Pledge warranty cover?

The GAF Silver Pledge Limited Warranty covers manufacturing defects with a Lifetime† term and 50-year non-prorated protection period, wind damage through the WindProven™ program with no maximum wind speed restriction, algae discoloration for 25 to 30 years depending on shingle, and misapplication errors discoverable within the first two years. It is only available through GAF Certified Plus installers such as American Group Construction.

Does a roofing warranty cover hail damage?

No. Standard roofing warranties — both workmanship and manufacturer — do not cover hail damage. Hail damage is covered by homeowner’s insurance, not roofing warranties. Class 4 impact-rated shingles such as the Timberline UHDZ® may qualify for insurance discounts, but they do not provide warranty coverage for hail events.

Can I transfer my roofing warranty when I sell my home?

Yes. The GAF Silver Pledge warranty is transferable once to a second owner. If the transfer occurs within the first 20 years, the second owner receives the same coverage as the original owner. After 20 years, coverage reduces to a two-year period. The new owner must notify GAF in writing within one year of the property transfer.

Is a roofing warranty different on a new construction home vs. a replacement?

The warranty structure is similar but there are important differences. On new construction, the warranty begins on the installation date — not the date of home purchase — so coverage may already be years old when a buyer moves in. Buyers should request warranty documentation at closing. On a replacement, new coverage starts fresh on the installation date. Both require a certified installer for full GAF Silver Pledge coverage.

What voids a GAF roofing warranty?

Common warranty voids include inadequate attic ventilation, third-party work performed on the roof after installation, installation over damaged decking, pressure washing the roof surface, and failure to register the warranty within 45 days of installation. American Group Construction handles GAF warranty registration as part of every project completion.

How do I file a warranty claim with American Group Construction?

For workmanship issues, contact American Group Construction directly through the warranty services page to submit a service request. For GAF materials defects, American Group Construction can advise on the process and provide documentation from the original installation to support your claim with GAF. Always document the issue with photos before any temporary repairs are made.