Mandatory Requirement: RBQ Licence Verification
In Quebec, no contractor may legally perform roofing work — commercial or residential — without a valid RBQ licence. Verify the licence at RBQ before signing any contract. Confirm it is active (not suspended), covers the appropriate work category, and matches the legal business name of the contractor you are hiring.
Insurance: What to Request and Verify
Request a current certificate of liability insurance before work begins. Commercial roofing projects require higher coverage limits than residential work — confirm the policy covers the full replacement value of your building and its contents in case of a contractor-caused incident. Cossette carries full liability insurance on all commercial projects and provides certificates upon request.
Written Contract: What It Must Include
A professional commercial roofing contract should specify: exact scope of work (which sections, which membrane system), all materials by product name and grade, project timeline, payment schedule, warranty terms (both manufacturer and workmanship), and how change orders are handled. Avoid any contractor who provides verbal agreements or resists a detailed written contract.
Commercial Experience and References in the Outaouais
Commercial roofing — particularly torch-applied SBS and heat-welded TPO — requires specific training and equipment beyond residential work. Ask for references from comparable commercial projects completed in the Outaouais within the last 24 months. Verify that the technicians performing the work hold the appropriate certifications for the membrane system specified.
Frequently Asked Questions
What questions should I ask a commercial roofer before hiring?
Key questions: What is your RBQ licence number and can I verify it? Are you insured — can you provide a certificate? What commercial membrane systems have you installed in the Outaouais? Can you provide references from similar commercial projects? Will you provide a written contract with itemized scope and warranty terms?
Should I get multiple quotes for a commercial roof in Gatineau?
Yes — always get two to three written quotes for commercial roofing. Ensure each quote covers the same membrane type, scope, and warranty terms before comparing prices. The lowest quote is not always the best value when quality, warranty, and contractor reliability are factored in.
Is Cossette Roofing available for commercial projects in Ottawa as well as Gatineau?
Yes. Cossette serves commercial clients on both sides of the Ottawa River — including Ottawa, Kanata, Orléans, and Hull — in addition to the full Gatineau and Outaouais market. Call 819-777-7177 to discuss your commercial project.