On schedule. On site. Done right. 519 Roofing works with Southwestern Ontario's top builders — and we're raising the standard for what a roofing trade looks like.
As a highly sought-after roofing company specializing in new construction, we understand what it takes to keep your projects on schedule and your builds properly dried in. Our reputation is built on consistent quality, reliable timelines, and a team of highly skilled installers.
We know that in new construction, every trade matters — and roofing plays a critical role in protecting your progress. That's why we focus on clear communication, dependable execution, and a proactive approach on every job site.
We work with some of Southwestern Ontario's most respected builders and are always welcoming new partnerships.
— 519 Roofing
Most Requested
The most common choice for Ontario new construction. Cost-effective, reliable, and available with registered Owens Corning manufacturer warranties on every job.
View Asphalt Roofing →
Mechanical lock and snap lock systems manufactured on-site with our portable roll-former. 40-70 year lifespan. Increasingly specified on premium Ontario builds.
View Metal Roofing →
Class 4 impact rating, 50-year warranty, made from recycled materials. Ideal for complex geometries and builders looking to offer a premium product.
View Euroshield →We review your plans before framing starts. We flag anything that could affect the roof system early — before it becomes expensive to change.
We understand your timeline depends on getting dried in fast. We schedule around your framing crew and prioritize getting your build weathertight — typically within 48 hours of framing completion.
Learn about our dry-in process →Our crew is professional, clean, and accountable on every build site. We represent your build as much as we represent ourselves — and we take that seriously.
Every job closes with a real-time documented inspection report. Photos, findings, and sign-off. No deficiencies left open, nothing that delays your occupancy.
About our inspection process →Every eligible installation gets an Owens Corning manufacturer warranty registered in the homeowner's name — a selling feature your buyers will appreciate.
About warranty registration →519 Roofing is 1 of only 4 Owens Corning Preferred Contractors in Southwestern Ontario — and a certified Euroshield preferred installer. These designations are earned, not purchased.
For your buyers, it means their warranty is fully registered, their installation is backed by a national brand, and their contractor has been vetted beyond the industry standard. That's a selling feature for your homes.
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We are the only roofing contractor in Southwestern Ontario operating a portable job-site roll-forming machine. Custom metal panels are cut to exact length directly on your property — no delivery delays, no off-cuts charged back to you, no distributor markup passed on to your budget.
For builders specifying metal roofing, this means faster installs, precision fitting, and a cost advantage you won't find anywhere else in the region.
Explore metal roofing options →
519 Roofing has been our go-to for new construction for years. They show up, they communicate, and they've never once caused a delay on our builds. That's rare in this trade.[Company Name], Windsor ON
The documented inspection reports are something we didn't know we needed until we had them. Now we wouldn't work with a roofer that doesn't provide them.[Company Name], London ON
Real builder reviews coming soon. Ask us for references.
We're selective about the builders we work with — and builders are selective about us. If you're looking for a roofing partner who will make your build better, not harder, let's talk.
For builders and general contractors in Southwestern Ontario, finding a reliable roofing subcontractor is one of the most critical decisions in the construction process. 519 Roofing has completed more than 2,500 roofing installations across the region over 20+ years, working alongside residential builders in Windsor, London, Chatham-Kent, Sarnia, and surrounding communities. Our team installs architectural asphalt shingles, mechanical lock standing seam metal, snap lock metal, and Euroshield rubber roofing systems — covering every specification a builder in Ontario is likely to encounter.
As one of only four Owens Corning Preferred Contractors in this part of Ontario, 519 Roofing registers manufacturer warranties in the homeowner's name on every eligible installation. We carry full WSIB coverage and commercial general liability insurance, and provide clearance certificates upon request. Every project closes with a documented real-time inspection report — giving builders and site supervisors a clear, professional record of the completed work. Our portable job-site roll-forming machine allows us to manufacture custom metal panels directly on your property, eliminating distributor lead times and reducing waste costs.
Builders working in Southwestern Ontario who need a roofing subcontractor with proven new construction experience, consistent scheduling, and a zero-deficiency standard can reach 519 Roofing directly at (519) 914-0525 or through the builder inquiry form on this page. We respond to all builder inquiries within 4 business hours and provide detailed written quotes within 48 hours of a site visit.
Free builder quotes — 48hr turnaround
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