When a contractor says a project is warrantied, that usually means two different warranties from two different parties. They cover different failures, run for different lengths of time, and are claimed in different places. Homeowners tend to find this out at the worst moment, which is when something has already gone wrong.
The Two Warranties
The material warranty comes from the manufacturer of the product. It covers the product itself failing in a way it should not, such as shingles degrading early or a sealed window unit losing its seal. It does not cover the product being installed incorrectly.
The workmanship warranty comes from the contractor. It covers the installation, which in practice is where a large share of problems originate. Water getting past flashing is an installation issue, not a shingle defect.
The distinction matters because the two failure modes look similar from inside the house. A leak is a leak. Which warranty applies depends on the cause, and determining the cause is often the first argument.
What to Ask Before You Hire
- How long is your workmanship warranty, and is it in writing? Lengths vary considerably between companies, and a verbal assurance is difficult to rely on years later.
- What does it exclude? Storm damage, normal wear, movement of the house, and anything affected by lack of maintenance are commonly excluded.
- Is it transferable if I sell? This can matter for resale, and some are transferable only once or only within a window.
- What is the material warranty on the specific products in this quote? Different tiers of the same product line often carry different terms, which is part of why one estimate can be higher than another.
- Are you certified by the manufacturer? Some manufacturers offer extended or system level coverage only when the installer holds a certification, and only when the whole system is theirs.
- What voids it? Later work by another contractor, or in some cases mounting something to the installed surface, can affect coverage.
Why "Lifetime" Needs Reading
Long warranty terms are common in marketing and often mean something narrower than they appear. Prorated coverage is the usual reason: full replacement value applies for an early period, after which the amount payable declines over the remaining years. Coverage may also be limited to the material itself and exclude the labor to remove and reinstall it, which on a roof can be the larger share of the cost.
None of this makes such warranties worthless. It does mean the headline number is not the useful figure. The useful figures are how long full coverage lasts, whether labor is included, and what the claims process requires of you.
Keeping Coverage Intact
Warranties generally assume the product is maintained and that the manufacturer's installation instructions were followed. A few habits protect your position:
- Keep the written warranty documents, the scope of work, the final invoice, and any change orders together
- Photograph the work as it progresses, especially anything that will be covered up
- Register the product with the manufacturer if registration is required, and note any deadline
- Keep records of required maintenance, such as inspections or cleaning
- Report problems promptly, since many warranties require timely notice
When You Need to Claim
Start with the contractor, even if you suspect a material defect, since they generally handle the manufacturer relationship and know how the product should have been installed. Put the issue in writing with dates and photographs rather than relying on phone calls.
If the contractor is no longer in business, the workmanship warranty usually goes with them. The material warranty typically survives, though claiming without the original installer can be more difficult. This is one practical reason to weigh how long a company has been operating locally alongside price.
Before hiring, confirm license and insurance independently and ask for references from work completed several years ago rather than only recent jobs, since that is what tells you how their installations hold up.
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