Business Details
40 Years
experience
Emergency
services
Professional Roofing Services in Guelph
Wm. Green Roofing has been a trusted name in roofing since 1986, serving Guelph and southern Ontario. Our founder began his career over 40 years ago, establishing expertise that now drives our industry leadership as a GAF Master Elite certified contractor. We specialize in residential, commercial, industrial, and institutional projects across shingle, flat, and metal roofing systems. Our approach combines certified professionals with premium materials to ensure lasting solutions. Full insurance coverage and memberships in the Ontario Industrial Roofing Contractors Association and Canadian Roofing Contractors Association underscore our commitment to quality.We handle projects from initial consultation through debris removal and installation, backed by transferable warranties. Recognized for prompt service and transparent communication, we partner with local fabricators for specialized metal roofing needs. Regular maintenance programs and detailed inspections demonstrate our dedication to customer satisfaction, with every project reflecting our philosophy that a roof protects more than property it safeguards homes, businesses, and investments.
Services
Roof Repairs
Roof Replacement
Metal Roofing
Flat Roofing
Sloped Roofing
Roof Maintenance
Roof Inspections
Skylight Installation
New Construction
Warranty Services
Details
- Year established: 1986
Highlights and features
- 40+ years of local roofing expertise in Guelph and surrounding areas
- GAF Master Elite certified with elite installer training standards
- Full-service solutions from repairs to new construction projects
- Comprehensive warranties on both materials and workmanship
- Established partnerships with local metal fabrication specialists
Associations and certifications
- GAF Master Elite
- Ontario Industrial Roofing Contractors Association
- Canadian Roofing Contractors Association
- Grand Valley Construction Association
What people say
Efficient and professional
Outstanding workmanship
Highly recommend
Excellent job
Very timely
Services
Roof Repairs
Addressing all scales of roof damage from minor leaks to major storm-related issues. Our crews conduct detailed inspections to identify root causes, implementing permanent fixes with premium materials. Specialized teams handle both sloped and flat roofing systems while maintaining structural integrity and waterproofing standards.
Roof Replacement
Full system replacements from old roof removal to new installation. We guide clients through material selection, ensuring optimal performance and aesthetics. Services include decking repairs, ventilation upgrades, and seamless integration of features like skylights while prioritizing debris management and site protection.
Metal Roofing
Partnering with O'Brien Fabrications for specialized metal roof solutions. Offering durable, energy-efficient systems with customizable options. Services cover installations, targeted repairs, and maintenance programs that maximize longevity while delivering thermal performance benefits through advanced material engineering.
Flat Roofing
Specialized systems for commercial and residential flat roofs using BUR, modified bitumen, EPDM, and TPO membranes. Our approach combines material expertise with precise installation techniques to prevent water accumulation issues while extending roof lifespan through tailored maintenance solutions.
Roof Maintenance
Proactive programs to extend roof longevity and prevent costly failures. Includes scheduled inspections, debris removal, seal integrity checks, and minor repairs. Our maintenance plans help clients avoid emergency situations by identifying potential issues before they escalate into major problems.
People
Bill Green
Founder
With over four decades in the roofing industry, Bill established Wm. Green Roofing in 1986. His expertise spans all roofing systems, emphasizing quality craftsmanship and customer education. He continues to shape company standards through hands-on leadership and industry engagement.
Questions
Do you charge for roofing 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 WSIB coverage for all staff members.
Do new roofs come with warranties?
We offer transferable manufacturer warranties and workmanship guarantees on all new roof installations.
Should I replace skylights with my roof?
We recommend simultaneous replacement since skylight seals degrade at similar rates to roofing materials.
How long does roof replacement take?
Project timelines vary based on size, weather, and material availability. We maintain regular communication throughout the process.
Do you train your installers?
All staff complete GAF-certified training programs with ongoing safety and technical skill development.
