Questions to Ask About Manufacturer vs. Workmanship Warranties
Understand what a '50-year warranty' actually covers, why installation mistakes void material coverage, and how to evaluate contractor workmanship guarantees.
Key Homeowner Checklist
- Distinguish Product Material Defect vs Labor / Installation Failure
- Verify If the Contractor Is Factory-Certified (e.g. System Plus / Master Elite)
- Check Non-Prorated vs Prorated Coverage Timelines
- Ensure Warranty Terms Are Written Into Contract (Not Verbal Promises)
- Confirm Warranty Transferability Options for Future Buyers
1. Manufacturer Warranties Cover Defects, Not Leaks
A shingle manufacturer's warranty promises the product will not break down due to factory defects. However, if a leak occurs because a nail was placed incorrectly or flashing was misaligned, that is covered exclusively by the contractor's workmanship warranty.
2. The Role of Certified Installers
Leading manufacturers only offer extended non-prorated warranties when the roof is installed by an officially licensed and factory-certified contractor who follows precise application guidelines.
3. Documenting Your Warranty
Always store your final paid invoice, contract copy, and manufacturer registration receipt together in your home maintenance records.
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