A new roof is one of the most expensive home improvements you'll make, typically costing $8,000 to $25,000+ depending on size and materials. The roofing contract determines not only what work is performed but what happens when problems arise — and roofing disputes are among the most common home improvement complaints filed with state attorneys general. Two warranties are typically in play: the manufacturer's material warranty and the contractor's workmanship warranty, and the gaps between them are where most problems fall. Many homeowners discover too late that their 25-year shingle warranty doesn't cover installation errors, or that the contractor's workmanship guarantee expired after just one year.
What is a Warranty and Scope?
A roofing contract is an agreement between a homeowner and a roofing contractor for the installation, repair, or replacement of the roof. The contract should define the scope of work (what is included and excluded), materials to be used, timeline, payment schedule, warranties, and cleanup obligations. Most roofing work involves two types of warranty: the manufacturer's warranty covering material defects (typically 20-50 years for shingles) and the contractor's workmanship warranty covering installation quality (typically 1-10 years). The contract is also subject to state home improvement contractor regulations and licensing requirements.
Red flags to watch for
Most roof leaks caused by installation errors appear within 1-5 years. A 1-year workmanship warranty expires before many installation defects become apparent. Look for a minimum 5-year workmanship warranty.
Without specific manufacturer and model numbers for shingles, underlayment, flashing, and ventilation, the contractor can substitute cheaper materials. This can also void manufacturer warranties if non-compatible products are used.
The contractor won't know the condition of the roof deck until old shingles are removed. If the contract excludes decking repair or charges an undefined 'extra' rate, you'll face surprise costs mid-project.
A contractor demanding full payment upfront is a major red flag. Standard practice is a deposit (10-33%), progress payment, and final payment upon completion and inspection.
Most jurisdictions require permits for roof replacements. If the contract doesn't mention permits, the work may not be inspected, voiding your homeowner's insurance or creating problems when you sell.
Many manufacturer warranties require installation by a certified contractor. If your contractor isn't certified, the 25-year shingle warranty may be limited to a basic pro-rated material warranty.
Your legal rights
Roofing contractors are regulated at the state level. Many states require contractor licensing (e.g., California CSLB, Florida DBPR), and unlicensed work can void your homeowner's insurance and is unenforceable in contract disputes. Most states provide a 3-day right of cancellation for home improvement contracts under the FTC Cooling-Off Rule (16 CFR Part 429) and state equivalents. The Magnuson-Moss Warranty Act applies to manufacturer material warranties. State unfair and deceptive acts and practices (UDAP) statutes protect against contractor fraud. Many states have Home Improvement Contractor Acts that require specific contract provisions, set payment schedule limits, and provide for recovery funds if the contractor abandons the job.
Questions to ask before you sign
- 1What is the workmanship warranty duration and what does it cover specifically?
- 2What specific manufacturer and product will be used for every material?
- 3Is the contractor manufacturer-certified for those products?
- 4What happens if the roof deck needs repair after tear-off — what is the per-sheet cost?
- 5What is the payment schedule and when is the final payment due?
- 6Will the contractor pull all required permits and schedule code inspections?
- 7What is the start date, projected completion date, and what happens if the timeline is exceeded?
Disclaimer: This guide is for educational purposes only and does not constitute legal advice. Contract law varies by jurisdiction and individual circumstances. Always consult a qualified legal professional before making decisions based on this information.