Lifetime Written Workmanship Warranty
Roofing, Windows, Siding, Doors, Eavestroughs & HVAC
Flexible Financing Options (OAC)
Custom Contracting has proudly served Oshawa since 2017, completing 1,200 oshawa services projects. We navigate Oshawa's specific building requirements and climate conditions with expert precision.
Completed Projects
Happy Clients
Sq Ft Roofing
Years Experience
As Oshawa's trusted Owens Corning Platinum Preferred Contractors, we understand the unique roofing challenges faced by homeowners across our diverse neighborhoods. From the historic homes in Lakeview to the newer developments in Windfields, each area requires specific roofing solutions that stand up to Ontario's demanding climate.
Our deep roots in Oshawa's community have taught us that durability matters, especially given our region's freeze-thaw cycles and heavy snow loads. That's why we exclusively install premium Owens Corning and GAF roofing systems, backed by industry-leading warranties. Whether you're in McLaughlin's established streets or Kedron's growing community, our certified crews deliver roofing solutions built specifically for Canadian winters.
We provide comprehensive exterior contracting services to homeowners throughout Oshawa and surrounding areas.
Expert roof installation and repair services for Oshawa homes
Beautiful, durable siding for Oshawa'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 Oshawa homeowners.
Complete architectural shingle installation in Oshawa
Modern vinyl siding transformation in Oshawa
Energy-efficient windows installed in Oshawa
Standing seam metal roof in Oshawa
Premium James Hardie siding in Oshawa
Beautiful patio door installation in Oshawa
As GAF Certified Contractors, we're particularly proud of our in-house installation teams. Unlike many contractors who rely on subcontractors, our skilled crews work directly for us and undergo rigorous training in the latest roofing techniques. This commitment to quality has earned us top ratings on Google and countless referrals from satisfied neighbors throughout Oshawa.
We've seen firsthand how our city's automotive heritage has influenced its housing styles, from classic post-war bungalows to modern family homes. Each requires specific attention to detail, whether it's proper ventilation systems for older homes or architectural shingle installation for contemporary designs. Our lifetime workmanship warranty covers every project, giving you peace of mind for years to come.
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.
Oshawa
“Best decision we made for our home. The quality of workmanship is exceptional and the price was very competitive. Highly recommend!”
John D.
Oshawa
“After getting multiple quotes, Custom Contracting stood out for their professionalism and expertise. The lifetime warranty sealed the deal!”
Lisa T.
Oshawa
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When unexpected issues arise, our emergency repair team is ready to respond quickly. Just call (226) 799-4975, and we'll dispatch our certified technicians to assess and address your roofing concerns. Recently, during last winter's severe storm, we helped several Windfields residents with emergency repairs, preventing potential water damage to their homes.
The Owens Corning roofing systems we install are specifically engineered for Ontario's climate, featuring advanced wind resistance and superior ice-dam protection. Our TruDefinition Duration shingles, for instance, have proven particularly effective in Oshawa's lakefront areas, where wind exposure can be significant.
Ready to discuss your roofing needs with a certified professional? Contact us at (226) 799-4975 for a detailed assessment. We'll provide a clear, written estimate and explain exactly how we'll protect your biggest investment - your home. As your neighbors in Oshawa, we're committed to delivering roofing solutions that last.
We're committed to providing Oshawa homeowners with the best service, quality, and value.
Local Oshawa 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)
We proudly serve all neighborhoods and communities throughout Oshawa.
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 Oshawa homeowners with hands-on expertise for years. We've completed thousands of projects across every neighborhood, understanding the unique challenges of Oshawa'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
infor@customcontracting.ca