Manufacturer warranty: what it actually covers
The manufacturer warranty covers the product itself — shingles that fail prematurely, a water heater that leaks, a window seal that fogs. It almost never covers labor to replace the failed product. So when a shingle fails at year 14 on a "30-year" shingle, the manufacturer ships you replacement shingles. Reinstalling them is on you — typically several thousand dollars in labor.
Workmanship warranty: what it actually covers
The workmanship warranty covers installation errors — flashing that wasn't sealed, a fixture that leaks because it was installed wrong, ductwork that wasn't connected. This warranty comes from the contractor, not the manufacturer, and length varies wildly: anywhere from 1 year (legal minimum in some states) to 25 years for premium installers. Two-year is typical. Five-plus-year is a meaningful signal.
What voids a manufacturer warranty
- Installation that didn't follow the manufacturer's spec (most common — wrong underlayment, wrong fasteners, wrong spacing)
- Mixing the manufacturer's product with another brand's accessories (e.g. competing shingles + their starter strip)
- Lack of proper ventilation (specifically affects roof and HVAC warranties)
- Modifications after installation (cutting into siding, painting over factory finishes)
- Damage from "acts of god" — hurricane, hail, fire — unless you have a specific impact-rated product
Registration: the warranty step most homeowners skip
Most manufacturer warranties require registration within 30–60 days of installation to get the full term. Unregistered warranties often default to a shorter base coverage. Ask your contractor whether they register the warranty on your behalf (some do, some don't). If they don't, you have to do it yourself — and that requires the model numbers, serial numbers, and date of install, which the contractor should be supplying anyway.
Transferability when you sell the home
Some warranties transfer to the next homeowner; some don't. Transferable warranties add real resale value — buyers see "50-year transferable" and know they're not buying a roof at year 12 with 38 years of coverage gone. Non-transferable warranties drop to nothing at the closing table. Check transferability before choosing between two otherwise-equal products.
How to actually file a claim
When something fails, document with photos immediately. Contact the contractor first if it's potentially a workmanship issue (under their warranty term). If they say it's a product issue, file with the manufacturer using your registration number — they'll typically send out an inspector or ask for photos and a contractor's diagnosis. Manufacturers are generally responsive on registered warranties; the slow part is the labor side, since the manufacturer covers product but not the cost to install replacement.
Common questions
- What's a "50-year warranty" really worth?
- Read the fine print. "50-year" almost never means full replacement for 50 years. It usually means full replacement for the first 5–10 years, then prorated coverage that drops to a small percentage by year 50. By year 30, a 50-year warranty might pay 20% of replacement cost. Still meaningful — but not what most homeowners assume it means.
- If the contractor goes out of business, what happens to my workmanship warranty?
- It usually dies with the company. That's why contractor longevity matters — a 10-year workmanship warranty from a contractor in business for 6 months is much riskier than a 5-year warranty from a contractor with 20 years in town. The manufacturer warranty survives because it's with the manufacturer, not the contractor.
- Do extended warranties from a third party (Home Depot, big-box) actually pay out?
- Mixed track record. Big-box "protection plans" typically have very narrow coverage and high friction at claim time. Manufacturer warranties from the brand are almost always the better value if you have to pick one.
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