Roof warranties explained: Materials vs workmanship
Last updated · Materials, warranties & lifespan
Short answer: A new roof usually has two warranties. The manufacturer's material warranty covers defects in the shingles or other products. The contractor's workmanship warranty covers installation mistakes. Material warranties often switch from full to prorated coverage after an early period, and most exclude storm damage, poor ventilation, and improper installation.[1]
What does a roof warranty cover?
A roof warranty covers specific failures for a set time, and what it covers depends on who issues it. A manufacturer's standard limited warranty covers manufacturing defects in the products it makes. Manufacturers publish their warranty terms online, and they differ by product line.[1] A workmanship warranty from the roofer covers errors in how the roof was put on, such as improper nailing or flashing. Neither one is an insurance policy against storms.
What is the difference between prorated and non-prorated coverage?
Prorated and non-prorated coverage differ in how much the warranty pays as the roof ages. During the non-prorated period, sometimes called the full-start period, a covered defect is typically handled at full value for materials and sometimes labor. After that period, coverage drops by a set amount each year, so the payout shrinks. Two shingles both labeled "lifetime" can have very different non-prorated periods, which matters more than the headline term.[2]
What is a workmanship warranty?
A workmanship warranty is the roofer's promise to fix problems caused by installation. Terms range widely, from one year to many years. It is only as good as the company behind it, so a long workmanship warranty from a business that may not be around later is worth less than it sounds. Ask for it in writing, with the term, what is covered, and how to file a request.
What do enhanced or system warranties add?
Enhanced or system warranties add longer coverage when the roof uses the manufacturer's matching components and is installed by a contractor the manufacturer has credentialed. These may extend the non-prorated period and, in some programs, cover installation errors by that contractor. They often require registration and a fee paid by the contractor. Our guide to extended roofing warranties compares them in more detail.
What do roof warranties usually exclude?
Roof warranties usually exclude damage the shingles were not designed to resist or that came from outside causes. Common exclusions include: - Hail, wind above the shingle's rated speed, falling trees, and other storm damage - Poor attic ventilation that overheats the shingles - Installation that did not follow the manufacturer's instructions - Foot traffic, alterations, and later work by other trades - Cosmetic algae staining unless the product has an algae warranty Storm damage is a matter for your homeowners insurance, and only your insurer decides what a policy covers.
How do you register a roof warranty?
To register a roof warranty, follow the manufacturer's process, which often needs to be completed within a set number of days after installation. Some contractors register on your behalf. Ask who will do it, and get a copy of the registration confirmation. Keep it with the invoice, the product names and colors, and photos of the job, since a claim usually requires proof of purchase and installation date.
Can a roof warranty transfer when you sell?
A roof warranty can often transfer when you sell, but the rules differ. Some manufacturers allow one transfer and require notice and a fee within a set time after the sale. Coverage after a transfer may be reduced. If you are buying a house with a newer roof, ask the seller for the warranty paperwork and check the transfer steps right away.
What should you get in writing?
Get both warranties in writing before you sign. The Federal Trade Commission advises homeowners to make sure every promise, including warranties, is written into the contract.[3] The contract should name the shingle product line, the warranty type, the workmanship term, and who registers the warranty. If a salesperson promises coverage that is not on paper, ask them to add it.
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Frequently asked questions
Does a lifetime shingle warranty mean the roof lasts a lifetime?
No. "Lifetime" is a warranty term with prorated coverage. Actual roof life depends on climate, ventilation, and installation.
Is hail damage covered by a roof warranty?
Usually not. Hail and storm damage are typically excluded and handled through homeowners insurance, subject to your policy.
What voids a roof warranty?
Common causes include installation that ignores the manufacturer's instructions, poor ventilation, unapproved alterations, and failing to register when required.
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Sources
- Owens Corning Roofing Warranty Center / transfer guidance. www.owenscorning.com/en-us/roofing/warranty
- CertainTeed: My Roof Warranty — what it covers. www.certainteed.com/inspiration/how-tos/my-roof-warranty-what-it-and-what-it-cov
- FTC, How To Avoid a Home Improvement Scam. consumer.ftc.gov/articles/how-avoid-home-improvement-scam
Sources checked November 4, 2026. Estimates are not quotes. Roofing, insurance, and legal details vary. Confirm with your contractor, insurer, or attorney.