What Does a Roof Warranty Actually Cover?

Roofing warranty labels can sound broader than the written coverage actually is. Product warranties and workmanship warranties cover different issues, contain exclusions, and may change over time. Understanding those distinctions before you sign a contract puts you in a much stronger position as a homeowner.

The Two Types of Roof Warranty

Manufacturer Warranty

The manufacturer warranty covers defects in the roofing materials themselves. If a shingle cracks, delaminates, loses granules prematurely due to a product defect, or fails in a way that stems from the manufacturing process rather than installation or weather, the manufacturer warranty is the relevant coverage. This warranty is issued by the shingle or metal roofing manufacturer — GAF, Owens Corning, CertainTeed, DECRA, and others — not by your contractor.

For the GAF shingles Big Dog installs, the manufacturer provides its own limited product warranty against manufacturing defects. For our metal roofing installations, the manufacturer likewise provides its own product warranty. Ask us for the warranty documents for the specific products on your roof.

Craftsmanship (Workmanship) Warranty

The craftsmanship warranty — also called a workmanship or labor warranty — covers the quality of the installation itself. If a leak develops because of how the roof was installed rather than a material defect, the craftsmanship warranty is what applies. This includes improper nail placement, inadequate flashing, poor valley installation, incorrect underlayment lapping, and any other installation error that leads to premature failure.

This warranty comes from your contractor, not the manufacturer. Its length and terms vary widely across the industry. Many contractors offer only 1 to 5 years. Big Dog backs every roof replacement with a 15-year craftsmanship warranty on all labor — one of the longest in the Fort Wayne market — because we're confident in our installation quality and every crew works to our standards under Big Dog oversight.

What Voids a Roof Warranty

Understanding what can void your warranty is as important as understanding what it covers. The most common voiding conditions:

Improper installation. GAF's manufacturer warranty specifically requires that shingles be installed according to their installation guidelines, including proper nailing patterns, nail placement zones, and fastener type. A contractor who cuts corners on installation — even with genuine GAF shingles — can inadvertently void the manufacturer warranty before the homeowner ever moves in.

Inadequate ventilation. This one surprises a lot of homeowners. Most GAF shingle warranties explicitly require that the attic ventilation system meets their specifications. An improperly ventilated attic can void your GAF shingle warranty because the heat buildup causes shingle failure that GAF considers preventable. This is one more reason we treat ventilation as non-negotiable on every installation.

Unauthorized repairs. If a leak develops and someone makes repairs without following the applicable warranty notice and repair procedures, coverage on the affected area may be limited or voided. Read the actual manufacturer and workmanship terms before authorizing repair work.

Failure to register. Some manufacturer warranties require registration within a set period after installation. GAF's enhanced system warranties generally require registration. Your contractor should handle this at job completion — confirm that they do as part of your contract review.

Big Dog's Warranty in Plain Terms

Here is exactly what you get with a Big Dog roof replacement:

• 15-year craftsmanship warranty covering all labor and installation quality on every roof replacement
• Manufacturer product warranty on GAF shingles covering material defects per the manufacturer's terms
• Manufacturer product warranty on metal roofing for all standing seam and metal panel installations
• All installations include proper ventilation to keep manufacturer warranty conditions valid
• Our crews are trained and supervised to the Big Dog standard on every job.

What Determines the Manufacturer Warranty Options

Manufacturer warranty options depend on the exact products installed, whether the components qualify as a complete system, required registration, installer eligibility, and the manufacturer's current written terms.

Ask for the precise manufacturer document that applies to your roof, then compare it with the contractor's written workmanship coverage. Big Dog's current workmanship terms are linked on our warranty page.

Ask any contractor you're considering which warranty options they can offer on your specific project — and get it in writing. Coverage varies by installer and product registration, so confirm exactly what your roof will carry before you sign.

Why Installation Quality Matters More Than the Warranty Document

Here's the honest truth that doesn't get said enough in the roofing industry: a warranty is only as valuable as the company standing behind it. A 50-year warranty from a contractor who will be out of business in three years is worthless. A manufacturer warranty is valuable, but exercising it requires documentation, inspection, and often a negotiated settlement — a process that takes time and effort.

The best protection you have is a roof that was installed correctly in the first place. Proper nail placement and pattern. Correct flashing at every penetration. Adequate ventilation. Full ice and water shield coverage at eaves and valleys. These execution details — done right on day one — determine whether your roof performs for 25 years without incident, regardless of what any warranty document says.

Our crews are trained and supervised to the Big Dog standard on every job. The 15-year craftsmanship warranty is the written commitment that supports that installation standard.

If you have questions about financing your new roof, we offer flexible payment options through GreenSky that make it easy to choose the installation quality and materials your home deserves without budget pressure forcing a compromise.

Frequently Asked Questions

Related Services

For a second plain-language review, read what Indiana roofing warranty terms cover and exclude.

Keep the warranty with the rest of the records in a complete roof replacement closeout file.