Your roof does more than keep the rain out. It protects your home, your family, and everything inside. When it's time for a roof replacement, you want it done with the right materials, the right team, and the right process from start to finish.
T. Simpson Roofing has been replacing roofs across Barrie, Newmarket, and Central Ontario since 1992. As a Master Elite™ Contractor, a distinction held by only 2% of roofing contractors in North America, we bring a level of skill, accountability, and quality to every roof replacement that most companies simply can't match.
Not every roofing problem calls for a full replacement but there are some signs that make it clear that repairs alone won’t cut it. Here’s what to watch for:
Most asphalt shingle roofs have a lifespan of 20 to 30 years. If yours is approaching or past that range, a replacement is likely the smarter long-term investment.
Cracking, curling, or missing shingles across large portions of the roof signal that the material has run its course.
If you've repaired the same areas more than once and water keeps finding its way in, the problem is likely systemic and not isolated.
Heavy granule buildup in your eavestroughs is a sign your shingles are breaking down and losing their protective capability.
A failing roof affects your home's insulation and ventilation, which often shows up first on your heating and cooling costs.
Sagging areas, soft spots, or daylight visible from the attic are serious warning signs that go beyond surface-level repairs.
Let our experts take a look. We'll assess your roof's condition and give you an honest recommendation.
A roof replacement is a significant project, and we think you should know exactly what to expect. Here’s how we approach every job:
We inspect your entire roof including shingles, underlay, flashing, ventilation, and eavestroughs and tell you exactly what we find.
You'll receive a detailed quote outlining materials, scope of work, timeline, and cost. No vague estimates, no surprise add-ons.
We'll walk you through your shingle and material options, helping you choose the right product for your home's style, your budget, and Central Ontario's climate.
We remove every layer of old roofing material down to the underlay. No shortcuts, no layering over old shingles. This gives your new roof a clean, solid foundation.
Once the old material is off, we inspect the roof underlay for any damage, rot, or soft spots and address them before anything new goes on.
Your new roof is installed to manufacturer specifications by our trained, certified team, ensuring your material warranty is fully valid.
We treat your property with respect. Every nail, every shingle scrap, every piece of debris is cleared before we leave.
Before we close out the job, we walk you through the completed work and make sure you're completely satisfied.
Less than 2% of roofing contractors in North America earn this designation. It means every job we do is held to the highest standards in the industry.
Every roof replacement is backed by a 50-year material warranty and a 25-year labour warranty. We stand behind our work long after the job is done.
Since 1992, we've been protecting homes across Central Ontario. We know this region, its climate, and what it takes to build a roof that lasts here.
A roof replacement is a significant investment. We offer flexible financing so you can get the quality your home deserves without the financial stress.
Want to learn more about who we are before getting started?
A roof replacement is a big decision. Here are the answers to the questions most homeowners ask before getting started.
Most residential roof replacements are completed in one to two days, depending on the size and complexity of the roof. We'll give you a clear timeline before work begins.
You don't need to be home for the work itself, but we do ask that someone is available at the start of the job for a final walkthrough and to address any questions.
A repair addresses specific damaged areas, while a replacement involves removing and reinstalling the entire roofing system. We'll always recommend the option that makes the most sense for your roof's condition and your long-term budget.
Yes, a roof replacement is consistently one of the highest-return home improvement investments. A new roof improves curb appeal, passes home inspections cleanly, and gives buyers confidence.
Completely. We remove all old materials, collect debris, and do a magnetic sweep for nails before we leave your property.
Absolutely. If your replacement is the result of storm or weather damage, we work directly with your insurance provider to document the damage and help streamline the claims process.
My 17-year old roof started to leak and I needed it fixed and eventually replaced asap. I have contacted a number of reputable roofing companies and Leandro from T.Simpson roofing was one of the first to come on site and provide a quote. He took the time to explain everything and arranged to have the roof temporarily patched before a storm and the long weekend. And the roof replacement was done the following week. The crew did a good job and did take care of the property and left it clean. I was also very impressed by Tiffany from their office who was very professional and also understood the urgency of having a roof that is already leaking and did prioritize it. Overall, I am very happy with the whole experience.
Tiffany was very professional and helpful booking the replacement of my shingles. The crew were polite, arrived early and got the job done quickly. Also did a good job of cleaning up. Second time I’ve used T Simpson and I highly recommend.
T. Simpson installed my first replacement roof 19 years ago. This new replacement roof they just installed is a state of the art shingle system for which they have been specifically trained and certified. The crew stripped the old roof, installed the new roof and roof vents and cleaned up thoroughly in less than a day. Roof looks great and I am confident that the quality of the roofing system and the quality of the workmanship. I am confident that I am using the best roofing system and that I had the right contractor to install it.
Very professional service by the Sales Rep and the installation crew. The service techs completed the replacement of the shingle product in less than two days. No evidence of any deficiencies. The property was completely clear of any leftover product (new or old).
So happy with my new roof from T. Simpson Roofing! It was long overdue and starting to become a concern. T. Simpson gave me fair pricing and were able to schedule the job very quickly. The crew was very professional and got the job done efficiently like a military unit. No mess was left behind and my new shingles look great! 10/10 would recommend!
We highly recommend T. Simpson Roofing. Our work involved a new roof, eaves troughs, downspouts, leaf guards, and new siding. The crews did a thorough job, even in trying November weather. The crew’s members were knowledgeable and personable, always willing to explain or answer questions.
Thank you Simpson Roofing for a great job!
Highly recommend using T Simpson Roofing. From start to finish everything was amazing. From Gary Salesperson, Tiffany kept me updated on scheduling to the crew that did the roof. Everything was done when they said. The crew cleaned everything up around my house & did an amazing job.
Get the same quality, care, and craftsmanship that our customers keep talking about. Request your free quote today.
T. Simpson Roofing operates out of two locations in Barrie and Newmarket, giving us strong coverage across the region.
Simcoe County: Barrie, Innisfil, Bradford West Gwillimbury, Collingwood, and surrounding communities.
York Region & GTA North: Newmarket, Aurora, East Gwillimbury, Georgina, Richmond Hill, Markham, Stouffville, and Uxbridge.
No matter where you are in our service area, you get the same quality materials, the same certified installation, and the same commitment to getting it right.
When it comes to your roof replacement, you deserve more than promises. Our certifications are proof that T. Simpson Roofing is held to the highest standards in the industry and that we consistently meet them.



Ready to move forward or just want to understand your options? We're here to help. Contact T. Simpson Roofing today for a free, no-obligation consultation and quote.