Serving St. Thomas & Surrounding Areas
Your Trusted Partner for Roofing, Windows, Siding & Exterior Services
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Lifetime Written Workmanship Warranty
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Roofing, Windows, Siding, Doors, Eavestroughs & HVAC
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Flexible Financing Options (OAC)
Lifetime Written Workmanship Warranty
Roofing, Windows, Siding, Doors, Eavestroughs & HVAC
Flexible Financing Options (OAC)
Serving St Thomas for 8 years, our team has completed 1,200 st. thomas services projects across the Southern Ontario. We understand St Thomas's unique climate challenges, building codes, and architectural styles.
Completed Projects
Happy Clients
Sq Ft Roofing
Years Experience
As St. Thomas's trusted roofing experts, we understand the unique challenges our railway city's homes face. From the historic properties in Downtown St. Thomas to the newer developments in Southwold, our deep local experience helps us deliver roofing solutions that stand up to Ontario's demanding weather patterns.
As both Owens Corning Platinum Preferred and GAF Certified Contractors, we bring the industry's highest credentials to every project. This isn't just about certifications – it means your home gets the benefit of advanced training and premium materials. When we install an Owens Corning roofing system in Talbot or repair storm damage in the Caso district, we're backing our work with a lifetime workmanship warranty that truly means something.
We provide comprehensive exterior contracting services to homeowners throughout St. Thomas and surrounding areas.
Expert roof installation and repair services for St. Thomas homes
Beautiful, durable siding for St. Thomas's climate
Premium gutter systems and gutter guards
Energy-efficient replacement windows and doors
Heating and cooling installation and maintenance
Improve energy efficiency with proper insulation
See our quality workmanship in action. These are real projects we've completed for St. Thomas homeowners.
Complete architectural shingle installation in St. Thomas
Modern vinyl siding transformation in St. Thomas
Energy-efficient windows installed in St. Thomas
Standing seam metal roof in St. Thomas
Premium James Hardie siding in St. Thomas
Beautiful patio door installation in St. Thomas
What sets us apart is our commitment to keeping everything in-house. Unlike other contractors, we never use subcontractors. Our own trained crews handle every aspect of your roofing project, ensuring consistent quality that's earned us our top-rated Google status. Just last month, we completed a complex architectural shingle installation on a century home near the railway lands, preserving its historic character while upgrading its protection against our harsh winters.
We're particularly proud of our emergency response capability. When last winter's ice storms hit the Southwold area, our team was there within hours, preventing water damage for dozens of homeowners. That's the kind of reliable service that's earned us the trust of your neighbors. For immediate assistance, you can always reach us at (226) 799-4975.
Don't just take our word for it. See what your neighbors are saying about our work.
“Outstanding service from start to finish! The crew was professional, punctual, and left our property spotless. Our new roof looks amazing!”
Sarah M.
St. Thomas
“Best decision we made for our home. The quality of workmanship is exceptional and the price was very competitive. Highly recommend!”
John D.
St. Thomas
“After getting multiple quotes, Custom Contracting stood out for their professionalism and expertise. The lifetime warranty sealed the deal!”
Lisa T.
St. Thomas
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Whether you're considering an Owens Corning Duration shingle system or need a reliable repair, we understand St. Thomas homes and their specific needs. Our expertise covers everything from heritage-appropriate solutions for downtown's historic properties to modern architectural shingles that complement newer developments.
Don't trust your home's protection to anyone less qualified. As your neighbors and fellow community members, we take pride in protecting St. Thomas homes with the highest quality materials and workmanship. Call us today at (226) 799-4975 to schedule a free, no-obligation inspection and consultation. We'll show you why so many of your neighbors trust us with their roofing needs.
We're committed to providing St. Thomas homeowners with the best service, quality, and value.
Local St. Thomas team ready to serve you quickly
Over 25 years of experience delivering excellence
Lifetime workmanship warranty on all projects
No payments for 1 year + 0% interest for 10 years (OAC)
Find us on Google Maps and see what our St. Thomas customers are saying about us!
We proudly serve all neighborhoods and communities throughout St. Thomas.
Monday - Saturday: 8am - 6pm
Emergency Service Available
45 Worthington Dr Unit H
Brantford, ON N3T 5M1
Contact us today for a free, no-obligation estimate on your roofing, siding, or exterior project.
Our team has been serving St Thomas homeowners with hands-on expertise for years. We've completed thousands of projects across every neighborhood, understanding the unique challenges of St Thomas's climate, building codes, and property types.
All our contractors are: Licensed, insured, background-checked, and continuously trained on the latest industry standards and techniques. We invest in ongoing education to ensure we deliver cutting-edge solutions.
All our installation work is backed by our lifetime workmanship warranty
No hidden fees. Detailed quotes with all costs itemized upfront
We don't consider the job done until you're 100% satisfied
Don't miss this 60% OFF offer! Contact us today.
📍 Visit Us
45 Worthington Dr Unit H
Brantford, ON N3T 5M1
✉️ Email Us
info@customcontracting.ca