Top Roofing Contractors in Markham Sep 2026 Rankings

It provides an excellent return on investment by preserving your home's structural integrity and curb appeal. For most minor roof repairs in Markham, such as replacing a few shingles or patching a small leak, a building permit is not required. However, according to the Ontario Building Code, a permit is necessary if you are undertaking structural alterations or re-shingling more than 25% of your roof. It's always best to consult with your chosen contractor or the City of Markham's building department to confirm requirements for your specific project.
The NRCA is a leading association of roofing professionals who have undergone rigorous training and certification processes to ensure that they are qualified and experienced in the field of roofing. Not only will you be getting a certified professional, but you will also be flat roof contractors toronto receiving a guarantee that the work performed will adhere to the highest industry standards. Flat roofs demand precise installation and the right material choices to guarantee long-lasting performance—and this is precisely where GHS Construction excels.

Mroof specializes in metal roofing rather than treating it as an occasional alternative to asphalt shingles. This focused experience helps our team provide accurate profile recommendations, properly matched system components, and installation details suited to Ontario conditions. Asphalt shingles usually cost less initially, but they generally have a shorter replacement cycle. A properly specified and installed steel roof is designed for decades of service. When comparing metal roofing quotes, consider the material manufacturer, panel thickness, coating, installation method, warranty, and expected long-term ownership cost. Markham's climate demands strong roofing solutions that withstand harsh winters, spring thaws, and summer humidity.
RonOvations provides expert roofing services throughout Markham and nearby communities across York Region, including Toronto, Aurora & Newmarket, Vaughan, and Richmond Hill. Our local crews understand what Ontario roofs need, and we back every job with quality workmanship. From free estimates to timely project completion, we guarantee professionalism and exceptional value every step of the way. Trust our certified team to protect your property with roofing solutions built to last.
But Markham's newer homes came with a different set of problems. Roofers in Ontario should hold valid business registration and active WSIB workers compensation coverage. Of the top 26 roofers in Markham by ProScore, 7 carry active WSIB coverage. Spark roofing and aluminum ranks 23rd of the 26 roofers ProScore scores in Markham, holding a ProScore of 50 out of 100 (Basic tier). Ten 2 roofing ranks 12th of the 26 roofers ProScore scores in Markham, holding a ProScore of 56 out of 100 (Good tier).

Skylights replacement and repairs are a challenge for many roofing companies in Ottawa. They are intimidated by them since skylights require attention and skills. The Roof Whisperer proudly offer skylights services for any home in Ontario. Yes, minimum 90 days workmanship warranty will be provided in writing once work completed and payment made for any roof repairs in Markham. What makes us the most effective Markham roofing company to pick from?
We install products from industry-leading manufacturers, each offering unique benefits and comprehensive warranties. Start your Markham roofing project now and pay later with our deferred payment program. No payments for up to 6 months, ideal for managing seasonal home improvement budgets. Markham's humidity levels often exceed 80% during summer months, while winter brings heavy snow accumulation. This combination creates significant moisture challenges for roof systems and attic spaces.
Its durability and insulation qualities make it a strong option for homeowners who want a balance of performance and visual appeal. Contact us today for a free, no-obligation estimate, and let us show you why we’re the go-to roofing company in Markham. Our robust supply chain guarantees timely delivery of top-quality materials for every job.

Masstop Roofing Inc. ranks 18th of the 26 roofers ProScore scores in Markham, holding a ProScore of 54 out of 100 (Good tier). Kavanagh Roofing ranks 17th of the 26 roofers ProScore scores in Markham, holding a ProScore of 54 out of 100 (Good tier). 3S Roofing Ltd. ranks 16th of the 26 roofers ProScore scores in Markham, holding a ProScore of 54 out of 100 (Good tier). ENERGY ROOFING Ltd ranks 15th of the 26 roofers ProScore scores in Markham, holding a ProScore of 55 out of 100 (Good tier). YS Roofing ranks 14th of the 26 roofers ProScore scores in Markham, holding a ProScore of 56 out of 100 (Good tier). Toronto City Roofing ranks 13th of the 26 roofers ProScore scores in Markham, holding a ProScore of 56 out of 100 (Good tier).
Our deep knowledge of Markham's microclimate patterns ensures lasting protection for every property. Qualifying installations can include protection for workmanship and roofing materials depending on the products and project requirements. Our warranty protection provides additional information about coverage. So, it is very durable provided good quality materials are used and it is professionally installed. Most roof replacements in Markham are completed within two to five days, depending on weather conditions and roof size. Our crews are known for staying on schedule without sacrificing quality or safety.

All their services are competitively priced,  and they provide educational information as well. They use the highest-quality materials to withstand harsh weather conditions and the elements. They also provide a 10-year written warranty and a 25-year to lifetime product warranty.
A specialized tool bends and interlocks these edges, creating either a single or double-lock system. Contact us to learn how we can assist you and request an estimate for all your roofing requirements. At GHS Construction, we apply the same attention to detail and expert workmanship inside your home as we do on the outside. Whether you’re looking to modernize your interior  living spaces, improve functionality, or add value to your home, our team is here to bring your vision to life—with care, precision, and lasting results.