12 questions to ask a roofer before signing

Direct answer

A serious Québec roofer answers the 12 questions below clearly, in writing and without hesitation. Any hesitation, evasion or refusal to put the answer in writing should be treated as an elimination signal.

The 12 essential questions

1. What is your RBQ number and in which subcategory?

Expected answer: 10 digits, subcategory 4.2 (shingle, steel) or 4.3 (membrane).

2. Can you provide proof of civil liability insurance?

Expected answer: Written certificate, $2M minimum, sent within 24 hours.

3. Which exact material will you install (brand + model + colour)?

Expected answer: Precise mention (e.g.: IKO Cambridge IR, GAF Timberline HDZ).

4. What is the duration of the installation warranty, distinct from the manufacturer's?

Expected answer: 5 to 15 years in writing, with clear scope.

5. Is the municipal permit included in the price?

Expected answer: Yes, or exact price if extra.

6. How is the replacement of damaged decking calculated?

Expected answer: Unit price per plywood sheet + number of included sheets.

7. How many roof vents are planned and what type?

Expected answer: Ventilation calculation compliant with the Code (1 sq ft per 300 sq ft of attic).

8. What eave membrane do you use and how wide?

Expected answer: Brand (e.g. Grace Ice & Water Shield) and at least 3 feet from the eave.

9. What is the payment schedule?

Expected answer: Deposit ≤ 10%, balance at completion after inspection.

10. Can you give me 3 recent references (same type of work)?

Expected answer: Names, phones and verifiable addresses.

11. Who will physically perform the work: your crew or a subcontractor?

Expected answer: Clear answer with crew or subcontractor name and licence verification.

12. How do you handle unforeseen items during the project?

Expected answer: Written change-order protocol, signed by both parties before execution.

Quick scoring grid

• 11 to 12 precise and written answers: reliable contractor
• 8 to 10 answers: acceptable contractor, request clarifications
• Fewer than 8 answers: move to another bidder

Immediate red flags

• "I don't have the RBQ number on me"
• "We provide insurance after signing"
• "The shingle brand depends on the supplier that day"
• "The permit is your responsibility" (sometimes acceptable, but must be clearly quoted)
• "We give 10% off if you sign tonight"

FAQ — Questions to ask a roofer

Should I ask these questions before or after the quote?

After receiving the written quote, but before signing.

Can I receive the answers by email?

Yes. It is even recommended: written exchanges have legal value in a dispute.

Can GCT Expert ask these questions on my behalf?

Yes. Our independent review includes a standardized equivalent grid.