Business Details
40 Years
experience
Emergency
services
Expert Roofing Services in Guelph, Ontario
Wm. Green Roofing has been a trusted name in the roofing industry since 1986, serving Guelph and surrounding areas with unwavering commitment to quality and customer satisfaction. As a GAF Master Elite certified contractora distinction held by only 3% of roofing companies in North Americawe combine decades of expertise with top-tier materials to deliver durable, long-lasting solutions. Our team specializes in residential and commercial roofing, offering comprehensive services including repairs, replacements, installations, and maintenance. With full insurance coverage, WSIB certification, and memberships in leading industry associations, we uphold the highest standards of professionalism and safety.Our focus on transparency, from free estimates to clear communication, ensures clients receive exceptional value at every project stage. Backed by 40+ years of hands-on experience from founder Bill Green, we pride ourselves on personalized service and technical excellence, whether addressing minor leaks or executing large-scale re-roofs. Our reputation as a leading contractor in southern Ontario is built on consistent delivery of superior craftsmanship, innovative problem-solving, and a deep understanding of local roofing challenges.
Services
Roof Repairs
Roof Replacement
Roof Maintenance
Roof Inspections
Skylight Installation
Flat Roofing
Sloped Roofing
Metal Roofing
Details
- Year established: 1986
Highlights and features
- We have 40+ years of hands-on experience in residential and commercial roofing.
- Our GAF Master Elite certification ensures adherence to industry-leading standards.
- We provide free, no-obligation estimates with transparent cost breakdowns.
- Our team offers comprehensive solutions from emergency repairs to full replacements.
- We maintain active memberships in the Canadian Roofing Contractors Association and Ontario Industrial Roofing Contractors Association.
Associations and certifications
- GAF Master Elite
- WSIB
What people say
Efficient, professional
Outstanding workmanship
Highly recommend
Excellent job
Very timely
Services
Roof Repairs
Our experienced crews address roof leaks and storm damage promptly. We conduct thorough inspections to identify root causes, using premium materials for permanent solutions. Clients benefit from transparent pricing and warranties on all repair work.
Roof Replacement
We handle complete roof replacements from old material disposal to new installation. Our team guides clients through material selection and budget planning, ensuring compliance with local building codes and energy efficiency standards.
Roof Maintenance
Regular maintenance packages extend roof lifespan and prevent costly repairs. Services include debris removal, shingle inspection, and gutter cleaning, with customized schedules for residential and commercial properties.
Flat Roofing
Specialized flat roofing systems for industrial and commercial buildings. We install EPDM, TPO, and modified bitumen membranes, with expert repair services for membrane tears and structural issues.
Metal Roofing
Partnering with O'Brien Fabrications Ltd., we offer durable metal roofing solutions. Services include custom panel fabrication, energy-efficient installations, and specialized maintenance for commercial and residential properties.
Questions
Do you charge for roof repair estimates?
No, all our roof repair and replacement estimates are completely free of charge.
Is your company fully insured?
Yes, we carry $5,000,000 liability insurance and full WSIB coverage for all employees.
Do I get a warranty on my new roof?
Yes, we offer transferable workmanship warranties and manufacturer warranties on all roofing materials.
How long does a roof replacement take?
Project timelines vary based on roof size and weather conditions, with most replacements completed within 1-3 days.
Should I replace skylights during roof replacement?
We recommend replacing skylights simultaneously to ensure proper sealing and prevent future leaks.
How do I know when to replace my roof?
Signs include shingle curling, granule loss in gutters, attic daylight visibility, and frequent leaks despite repairs.
