How to Choose a Roofing Contractor in London, ON
Finding a trusted roofing contractor in London, ON is one of the most important decisions you'll make for your home. Whether you need emergency repairs after severe weather or a full roof replacement, hiring an unqualified contractor can cost you thousands in rework and insurance claim denials. This guide walks you through license verification, insurance requirements, and the critical questions to ask before signing any contract.
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In Ontario, roofing contractors must be registered with ServiceOntario or hold a Renovation Contractor License if performing work exceeding CA$30,000 (including labour and materials). Always ask for proof of registration and cross-check the contractor's name and license number on the official ServiceOntario registry.
Beyond provincial licensing, reputable London roofing contractors should hold membership with the Ontario Construction Secretariat (OCS), the Roofing Contractors Association of Ontario (RCAO), or similar trade bodies. These memberships indicate adherence to industry standards and ongoing professional development. Request copies of current licenses before work begins—legitimate contractors keep these readily available and don't hesitate to provide them.
Check Insurance and Liability Coverage
Your roofing contractor must carry both general liability insurance (minimum CA$2 million) and workers' compensation coverage. This protects you if a worker is injured on your property or if accidental damage occurs during installation. Ask for a Certificate of Insurance and verify the policy is active—don't rely on a copy the contractor provides; contact their insurer directly to confirm coverage.
In London, ON, insurance becomes critical during winter roof work when ice dams and weather-related damage increase claim volumes. If the contractor gets injured and lacks WSIB (Workplace Safety and Insurance Board) coverage, you could be liable. Always confirm your homeowner's insurance will cover the deductible for any storm or weather-related damage that occurs during or shortly after the work.
Get Multiple Quotes and Compare Details
Never accept the first quote. Contact at least three licensed roofing contractors in London for written estimates. A detailed estimate should specify:
• Roofing material type and brand (asphalt shingles, metal, slate, etc.)
• Scope of work (repair, partial replacement, or full replacement)
• Warranty terms (material and labour, typically 10–25 years)
• Timeline and project schedule
• Total cost broken down by materials, labour, and permits
• Cleanup and disposal plans
Be suspicious of quotes that are significantly lower than others—this often indicates use of inferior materials, inexperienced labour, or hidden costs that appear once work starts. Similarly, the highest quote isn't automatically the best. Compare the scope and materials side-by-side, not just the final price.
Essential Questions to Ask Before Hiring
- How long have you been roofing in the London area, and can you provide references from recent residential projects?
- Are you licensed with the province and insured for general liability and workers' compensation?
- Will you obtain the required building permit for the work, or is that my responsibility?
- What's your warranty on labour, and does it cover leaks or weather damage in the first year?
- How do you handle weather delays, and what's your policy on payment scheduling?
- Can you provide a detailed written estimate that specifies materials, labour, timeline, and cleanup?
- Who supervises the job on-site, and how often will you inspect progress?
Red Flags: What to Avoid
Be wary of contractors who pressure you to sign a contract immediately, offer unsolicited quotes at your door, or insist on full payment upfront. Legitimate London roofing contractors typically request 30–50% down payment with the balance due upon completion—never pay in full before the work begins.
Avoid anyone who insists they can "work around" your insurance or suggests bypassing the claims process. If your policy covers roof damage, filing a claim is the proper procedure; attempting to avoid it can void your coverage. Also flag contractors who lack a physical business address, don't return calls within 24 hours, or refuse to provide written estimates. Check online reviews carefully—look for patterns in complaints about communication, timely completion, or hidden costs rather than isolated negative comments.
Understanding Your Home Insurance and Deductible
Most homeowners insurance policies cover roof damage from storms, ice dams, or falling trees, but you'll typically pay your deductible (commonly CA$500–CA$1,500) out of pocket. Your roofing contractor should explain how the deductible applies to your claim and whether the insurance payout covers the full repair cost.
If your roof is over 15–20 years old, some insurers may deny claims or impose a higher deductible. Discuss this with your insurance provider before hiring a contractor. If the insurance payout falls short of the repair cost, your contractor should give you clear options: proceed with the remaining balance out-of-pocket, or discuss more cost-effective materials. Never let a contractor inflate invoices to try to cover your deductible—this is insurance fraud.
Frequently Asked Questions
Do I need a building permit for a roof replacement in London, ON?
Yes, most roof replacements in London require a building permit from the City of London's Development Services. Your contractor should handle permit applications (often included in their quote). Skipping the permit puts your insurance claim at risk—insurers can deny claims if unpermitted work caused damage. Permits typically cost CA$100–CA$300 and take 5–10 business days to process.
What's the average cost of a roof replacement in London, ON?
A typical asphalt shingle roof replacement for a 2,000 sq. ft. home in London ranges from CA$8,000–CA$15,000, depending on pitch, material, and labour. Metal roofs are higher (CA$12,000–CA$25,000), while slate or tile can exceed CA$30,000. Always get multiple quotes because pricing varies based on waste removal, accessibility, and underlying structural repairs discovered during installation.
How long should a roof last in London's climate?
Asphalt shingles typically last 15–20 years in London's climate, though freeze-thaw cycles and ice dams can shorten lifespan. Metal roofs often reach 40–50 years, and slate can last 75+ years. Have a licensed inspector assess your roof every 5 years after age 10 to catch deterioration early. Early maintenance prevents costlier emergency repairs.
Can I claim roof repairs on my insurance if it's storm damage?
Yes, most homeowners policies cover sudden damage from windstorms, hail, or falling trees. You'll need to file a claim and pay your deductible, and the insurer will send an adjuster to assess the damage. Your contractor should provide photos and a detailed estimate to support the claim. Never pay the contractor in full until you've settled the insurance claim.
What should I do if my contractor discovers additional damage during the roof replacement?
Ask the contractor to stop work and provide a written estimate for the additional repairs before proceeding. Contact your insurance company to report the discovery—they may cover it under your existing claim. Get a second opinion from another licensed contractor if the additional cost exceeds CA$2,000. Always have written approval from your insurance or confirm you'll cover the cost out-of-pocket before work resumes.
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