Business ProfileVerifiedRoofers in Guelph, Ontario
Wm. Green Roofing Ltd.
Wm. Green Roofing Ltd. has provided roofing services in Guelph and surrounding areas since 1986. It handles flat and sloped roofing, re-roofing and new construction for residential, commercial, industrial and institutional properties. Metal roofing is completed in partnership with sister company O’Brien Fabrications Ltd., under the same ownership.
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Business Highlights
- It is locally owned and operated.
- It is a GAF Master Elite certified installer.
- It is fully insured and WSIB certified.
- It is a member of the Ontario Industrial Roofing Contractors Association, Canadian Roofing Contractors Association and Grand Valley Construction Association.
- It offers transferable workmanship and manufacturer warranties.
Service Area
Guelph, Kitchener-Waterloo, Cambridge, Elora, Fergus and St Jacobs, as well as the rest of Southern Ontario.
Public local listing. Wm. Green Roofing Ltd. is one of 11 roofers ProsGrade lists in Guelph, Ontario.
Listing details
9 services listed, including New construction roofing, Roof repairs and Roof replacement. Open weekdays, closed on weekends. 74 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How Wm. Green Roofing Ltd. compares with the other 10 roofers on ProsGrade in Guelph, using public Google ratings and review counts.
- Has more Google reviews (74) than 7 of the 10 other Guelph roofers on ProsGrade.
Trust Signals
For after-hours needs, call (519) 822-6414 as listed on their contact information.
Services Covered
9 services- New construction roofingSloped and flat roofing systems
- Roof repairsFlat and sloped repairs; leak diagnostics
- Roof replacementFull existing flat-roof system replacement
- Roof maintenanceScheduled inspections, drain and scupper clearing, membrane and shingle checks
- Roof inspectionsRoof assessments and consulting
- Skylight and roof penetration installationSkylights for sloped and flat roofs
- Sloped roofingArchitectural asphalt shingles, cedar shakes, metal systems, and custom or designer options
- Flat roofing
- Metal roofingStanding seam, hidden fastener panels and corrugated profiles
Reviews
What customers say
Several customers praise clear communication and professional crews. One homeowner says Bryce sent two crew members to remove roof snow and advise on an ice dam; another says Jesse prioritized a leak-related job, and the crew completed a new roof in two days.
Customer Reviews
Angela Zabder
We manage a portfolio of commercial properties, so finding reliable contractors is everything — and this roofing company has become our go-to without question.
What sets them apart? Same-day service (yes, really!), fantastic communication, and a team that genuinely cares. From the first call or email with Bryce, right through to Tim showing up on the roof, every step of the experience is wonderful — the team is always knowledgeable, professional, and willing to go the extra mile. The whole crew is delightful, which honestly makes a stressful situation feel a lot more manageable.
They don't just show up and do the bare minimum — they take the time to explain what's needed, share their expertise, and make sure you're completely taken care of. Highly recommend to any property owner or manager looking for a roofing partner they can count on!
Jennifer Pellegrino
We had a major amount of snow on our roof leading to an ice dam. Put in a couple of calls to several companies. Bryce at Wm Green Roofing was great. He sent two of his crew to remove the snow and give us advice on the ice dam. The team was professional and knowledgeable and the cost was reasonable. We wouldn’t hesitate to contact Wm Green Roofing should the problem arise again. Thanks very much!
Moiez Ahmad
Strongly recommend these guys for your reno roofing needs, great genuine guys. My experience with them was straightforward and they are honest, great guys. Look no further!
I wanted to post last week since I really do appreciate them helping me out and everything
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Frequently Asked Questions
Are roof repair and re-roof estimates free?
Yes. Roof-repair and re-roof estimates are free.
Can Wm. Green Roofing replace only a damaged section?
It can replace only damaged sections, but a partial replacement does not qualify for a manufacturer’s warranty.
What affects a roof replacement timeline?
The duration depends on project size and scope, weather, and materials.
Does Wm. Green Roofing provide emergency roof service?
It provides emergency leak repairs and 24/7 emergency service.