Quick answer: Before you hire, confirm the contractor carries WorkSafeBC coverage and liability insurance, holds a registered BC business license, gives you a written itemized quote after an actual roof inspection (not a phone estimate), and can name real commercial references. A legitimate commercial roofing contractor Vancouver property owners can trust will answer all ten of these without hesitation — if one dodges even two, keep looking.
Why This Decision Is Riskier Than Hiring for a HouseA residential reroof is typically a few days of work on one structure. A commercial roofing project can involve a larger membrane system, tenants or staff working below the crew, stricter warranty and insurance requirements, and significantly higher costs if something goes wrong. For commercial properties in Vancouver, choosing a roofing contractor based on price alone can create problems later. That’s why it’s important to evaluate the contractor carefully and check the ten factors below before making a decision.
10 Things to Check Before You Hire a Commercial Roofing Contractor in Vancouver
1. WorkSafeBC Coverage and Liability Insurance
Ask for a current WorkSafeBC clearance letter and proof of general liability insurance before any crew sets foot on your property. If a contractor’s worker is hurt on your roof and they’re not properly covered, the liability can land on the property owner — this is the single most important item on this list and the easiest one to verify in five minutes.
2. A Registered Business License and a Real Address
A legitimate roofing company Vancouver businesses hire has a registered business number, a physical address you can visit, and a landline — not just a mobile number and a Facebook page. This one check filters out most of the post-storm door-knocker crews before you’ve spent any real time on them.
3. Manufacturer Certification for the System Being Installed
Torch-on, TPO, and EPDM systems all carry manufacturer-backed warranties, but only if the installer is certified to install that specific product. An uncertified install can void the manufacturer’s warranty entirely, even if the workmanship looks fine on the day.
4. A Written, Itemized Quote — Never Just a Verbal Number
The quote should break out material, tear-off and disposal, flashing and drainage work, labour, and warranty terms as separate line items. A one-line “reroof: $X” quote gives you nothing to compare against a competing bid and nothing to hold the contractor to later.
5. References From Commercial Jobs, Not Just Residential Ones
A contractor can be excellent at houses and still be inexperienced with a 15,000 sq. ft. flat commercial membrane, drainage engineering, or coordinating work around live tenants. Ask specifically for two or three commercial references, and actually call them.
6. A Straight Answer on Who’s Doing the Work
Some companies sell the job and subcontract the install to a crew you’ve never vetted. That’s not automatically a problem, but you should know before you sign — ask directly whether it’s their own trained crew or a subcontractor, and who’s accountable if something goes wrong.
7. A Real Roof Inspection Before Any Number Is Given
Satellite-photo estimates and drive-by quotes are a red flag on a commercial roof, where deck condition, drainage slope, and existing layers all affect the real price. A contractor who quotes without getting on the roof is guessing, and that guess becomes your change order later.
8. A Warranty That Names Labour and Material Separately
Material warranties come from the manufacturer; labour (workmanship) warranties come from the contractor, and they’re not the same thing. Get both in writing, with specific term lengths — “warrantied” with no number attached isn’t a warranty.
9. A Plan for Minimizing Disruption to Your Business
If you have tenants, staff, or customers underneath the roof, ask how the contractor phases the work, handles noise and access during business hours, and protects interior spaces from dust and debris. A contractor who hasn’t thought about this yet probably hasn’t managed a commercial job with people inside it.
10. How They Handle Change Orders and Unexpected Findings
Rotted decking or hidden moisture damage under old roofing is common and not itself a red flag — how the contractor handles it is. Ask upfront what their process is for pricing and approving a change order before it happens, not after you’re mid-project and over budget.
Red Flags That Should Make You Walk Away Immediately
A handful of warning signs show up again and again on the commercial properties that call us for a second opinion after a bad hire: a large cash-only deposit requested before any contract is signed, high-pressure “today only” pricing, no fixed business address, an unwillingness to put the scope of work in writing, and a quote that arrived without anyone actually inspecting the roof. Any one of these alone is worth a pause; two or more together is a reason to end the call.
The Real Cost of Skipping This Checklist
On the commercial callouts we’ve taken over the past two years where a property owner brought us in for a second opinion after a bad first hire, the pattern is consistent: roughly half involved a contractor who never actually inspected the roof before quoting, and most of the rest involved a warranty dispute where the “warranty” turned out to be verbal only. The fix in both cases costs more than doing it right the first time would have — often significantly more, since a second contractor has to diagnose what the first one got wrong before they can even start the actual repair.
Questions to Ask on Your First Call
A quick five-question phone screen filters out most of the wrong fits before you waste time on a site visit:
- “Can you send your WorkSafeBC clearance letter and proof of liability insurance before we book an inspection?”
- “Do you use your own crew, or is the work subcontracted?”
- “What roofing systems are you manufacturer-certified to install?”
- “Can I get two commercial references I can actually call?”
- “Will someone inspect the roof in person before I get a number?”
A contractor who answers all five without hesitation has almost certainly already passed the ten-point checklist above.
What This Looks Like With a Commercial Roofing Contractor Vancouver Property Owners Actually Trust
All Star Roofing has handled commercial roofing Vancouver for property owners and managers across Vancouver and Metro Vancouver for years, and the process is built around the checklist above: a real on-site inspection before any number is given, an itemized written quote, WorkSafeBC coverage and liability insurance on every job, and manufacturer-certified installers for torch-on, TPO, and EPDM systems. Our commercial roof inspection guide and our breakdown of lifecycle costs by roofing system are both useful next reads once you’re comparing quotes.
Get a Commercial Roofing Quote in Vancouver
If you’re comparing contractors for an upcoming commercial reroof, repair, or maintenance program in Vancouver, start with an on-site inspection and a detailed, itemized quote — not just a phone number. All Star Roofing provides commercial roofing services in Vancouver, with WorkSafeBC-covered crews and manufacturer-certified installers experienced in the commercial roofing systems we work with.
Whether you need a roof assessment, repair, maintenance plan, or complete reroof, the right inspection can help you understand the condition of your property before work begins. Contact All Star Roofing today to schedule an inspection and discuss your commercial roofing needs in Vancouver.
Frequently Asked Questions
WorkSafeBC coverage and liability insurance come first — if a worker is injured on your roof and the contractor isn’t properly covered, the liability can land on the property owner. It’s also the fastest item on the list to verify.
Always written and itemized — material, tear-off and disposal, flashing and drainage work, labour, and warranty terms as separate line items. A one-line verbal number gives you nothing to compare or hold the contractor to.
Yes. Deck condition, drainage slope, and existing roofing layers all affect the real price on a commercial roof, and a quote given without an on-site inspection is a guess that usually turns into a change order later.
A material warranty comes from the manufacturer and covers the roofing product itself. A labour (workmanship) warranty comes from the contractor and covers the installation. Get both in writing with specific term lengths.
Not automatically, but you should know upfront. Ask directly whether it’s the company’s own trained crew or a subcontractor, and who is accountable if something goes wrong.
A large cash-only deposit before any contract is signed, high-pressure same-day pricing, no fixed business address, resistance to putting the scope of work in writing, and a quote given without an on-site inspection.
