A new roof comes with two very different warranties. Understanding both protects your investment.
1. Manufacturer warranty (the materials)
This covers defects in the shingles themselves. Basic coverage is often limited, but with a certified installer you can register enhanced manufacturer warranties (for example, GAF's stronger system warranties) that cover materials for decades — and, at the top tiers, even the labor to fix a covered material issue.
2. Workmanship warranty (the installation)
This is the contractor's promise that the roof was installed correctly. It's arguably the more important one day-to-day, because most roof problems come from installation, not material defects. Ask exactly how long the workmanship warranty lasts and what it covers.
Why certification matters for warranties
The best manufacturer warranties are only available through certified contractors. An uncertified installer simply can't offer them — so the same shingles can carry very different protection depending on who installs them. This is a big reason to choose a GAF-certified roofer.
Questions to ask
- What manufacturer warranty tier am I getting, and will you register it?
- How long is your workmanship warranty?
- Is the warranty transferable if I sell the home? (Transferable warranties help resale.)
- What could void the warranty (e.g., poor ventilation, later DIY work)?
Lightning Construction installs the full system and stands behind the work. Ask about warranty specifics during your free estimate.
The two warranties, and why the second one matters more
Every roof carries two separate promises and homeowners routinely confuse them.
- The manufacturer's material warranty covers defects in the shingle. Material defects are rare. This is the long, impressive-sounding number.
- The contractor's workmanship warranty covers the installation. Installation error is the overwhelming majority of roof failures. This is the number that actually protects you — and it is usually much shorter.
Questions that reveal a warranty's real value
- Is it transferable if you sell, and does that require a fee or a notice period?
- Is it prorated, and from what year? A "lifetime" warranty that depreciates from year one is worth little by year fifteen.
- Does it cover tear-off and disposal of the failed roof, or only the replacement material?
- What voids it? Pressure washing, satellite-dish penetrations, a second layer added later, and inadequate ventilation are all common exclusions.
- Is the workmanship warranty backed by the manufacturer, or only by the contractor's continued existence?
That last point is the one to sit with. A twenty-five-year workmanship warranty from a contractor who has been trading for two years is a twenty-five-year promise with a two-year track record behind it.