Roof Replacement Done Right the First Time
When it is time for a new roof, you want it done with the right materials, the right team, and the right process from start to finish.
Your roof does more than keep the rain out — it protects your home, your family, and everything inside. T. Simpson Roofing has been replacing roofs across Barrie, Newmarket and Central Ontario since 1992.
As a GAF 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 replacement that most companies simply cannot match. We remove every old shingle — no shortcuts — and install a brand-new roof built to last.
How to know it is time for a roof replacement
- Your roof is 20+ years oldMost asphalt shingle roofs last 20 to 30 years. Past that range, replacement is usually the smarter long-term investment.
- Widespread shingle damageCracking, curling or missing shingles across large areas signal the material has run its course.
- Recurring leaksLeaks that keep coming back after repairs point to a roofing system that is failing as a whole.
- Daylight or sagging in the atticLight through the boards or a sagging deck means moisture has reached the structure underneath.
Our roof replacement process
Honest assessment
We inspect your roof and give you a straight answer on whether a replacement is truly needed — or whether a repair will do.
Complete tear-off
We remove every old shingle down to the deck so we can spot and address any hidden damage before the new roof goes on.
Quality installation
We install a full GAF roofing system — underlayment, ice-and-water shield, ventilation and shingles — to manufacturer spec.
Thorough cleanup
We collect all old materials and run a magnetic sweep for nails before we leave your property.
Roof Replacement FAQs
Most residential roof replacements are completed in one to two days, depending on the size and complexity of the roof. We give you a clear timeline before work begins.
You do not need to be home for the work itself, but we ask that someone is available at the start of the job for a walkthrough and any questions.
A repair addresses specific damaged areas, while a replacement removes and reinstalls the entire roofing system. We always recommend the option that makes the most sense for your roof and your budget.
Yes — a roof replacement is consistently one of the highest-return home improvements. It improves curb appeal, passes inspections cleanly, and gives buyers confidence.
Absolutely. If your replacement is the result of storm or weather damage, we work directly with your insurance provider to document the damage and streamline the claim.
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