Decision Guide
Questions to Ask a Roofing Contractor Before You Hire
A practical vetting checklist for Boise homeowners comparing roofing bids — registration and insurance, written estimate detail, tear-off versus roof-over policy, warranty terms, permit handling, and how to check local references.
Before hiring, ask every roofing contractor for proof of Idaho contractor registration and liability insurance, a written itemized estimate, their tear-off versus roof-over policy, warranty terms in writing, confirmation they will pull the permit, and local references you can actually call.
Published 2026-08-19 · Updated 2026-08-19
Why the questions matter more than the pitch
Every roofing bid sounds reasonable in the moment — the crew is friendly, the number is in range, the timeline sounds fine. What separates a good outcome from a bad one usually is not visible in the sales conversation. It shows up in the fine print: what is actually included, what is not, and what happens if something goes wrong. Asking the right questions up front, and getting the answers in writing, is the entire job of vetting a contractor before you sign.
The checklist, in order
| Ask about | What to listen for |
|---|---|
| Registration and insurance | Current Idaho contractor registration number and proof of liability insurance |
| Written estimate | Itemized scope, materials, and pricing — not a one-line total |
| Tear-off vs. roof-over | Which one they are proposing, and why, for your specific roof |
| Warranty | Length and coverage of both the material warranty and the workmanship warranty, in writing |
| Permit handling | Confirmation they will pull the permit and schedule the inspection |
| Local references | Names and addresses you can actually verify, not just online reviews |
Registration and insurance
Idaho does not issue a traditional statewide trade license, but it does require contractors doing work over $2,000 — which covers essentially every roof replacement — to register under the Idaho Contractor Registration Act. Ask to see current proof, and independently verify it rather than taking a business card at face value. Ask for proof of liability insurance too: if a worker is hurt on your property and the contractor is not properly insured, the liability question gets complicated fast. See our full guide on checking Idaho contractor registration for how to verify this yourself.
Written estimate detail
A trustworthy estimate is itemized, not a single number. It should break out material type and brand, tear-off and disposal, any anticipated deck repair, underlayment, flashing work, and labor, with the permit fee listed separately. A bid that arrives as one lump total gives you nothing to compare against a competing bid, and it makes it much harder to tell later whether something included was actually skipped.
Tear-off vs. roof-over
Ask directly which approach the contractor is proposing and why. A roof-over — installing new roofing over the existing layer — can be a legitimate, lower-cost option on a roof with only one existing layer and no deck issues, but it skips the one chance to inspect and repair the deck underneath. If your roof already has two layers, code requires a full tear-off; there is no roof-over option left. Either way, get the contractor’s reasoning and their tear-off pricing in writing, even if you end up choosing a roof-over, so you know what you traded away.
Warranty terms
Roofing warranties come in two separate pieces that are easy to conflate: the manufacturer’s material warranty, which covers defects in the shingles or metal itself, and the contractor’s workmanship warranty, which covers installation errors. Ask for the length and exact coverage of both, in writing, and ask what happens to each warranty if the contractor is not in business in five or ten years — some manufacturer warranties transfer through the manufacturer regardless of the original installer, others do not.
Permit handling
Reroofing in Boise requires a city permit with a valuation-based fee (see our permit requirements guide), and a legitimate contractor pulls it as a normal part of the job. If a bidder suggests skipping the permit to save time or money, treat that as disqualifying, not accommodating.
Local references
Ask for references from jobs completed in the Treasure Valley within the last year or two, and actually call them. A company with a real local track record will have addresses you can look up and homeowners willing to talk about how the crew handled problems, not just the finished result.
Bottom line
None of these questions are complicated, but asking all of them, in writing, before you sign is what separates a contractor relationship that holds up from one that does not. If you want a straight answer to every item on this list for your own roof, call (208) 279-6903 and we will walk through registration, insurance, scope, and warranty terms with you before you commit to anything.
The bottom line
If you want this priced for your own property rather than in ranges, we come out and measure at no charge across Boise and the Treasure Valley. You get a written per-foot price with gates and removal broken out separately. Call (208) 279-6903.