Roofing for the GTA, run out of Milton
Flat roofs, shingles, gutters, storm damage — we've seen what an Ontario winter does to a roof and we fix it right the first time.
Email Us for a Free Estimate
A roof crew that actually shows up
We've been up on more GTA roofs than we can count — flat-roofed strip plazas in Mississauga, century homes in old Toronto, subdivisions in Milton barely a decade old. Every one of them fights the same enemy: freeze-thaw. Water gets into a crack, freezes, expands, and the crack gets bigger. Do that fifty times a winter and even a good roof starts to fail.
We know the housing stock
Older brick homes in Toronto and Oakville have different roof decks and ventilation than new-build subdivisions in Milton or Brampton. We adjust the approach, not just the shingle colour.
Flat roofs are half our business
TPO, EPDM, modified bitumen — commercial plazas, walk-up apartment buildings, additions with low-slope sections. We don't treat flat roofing as an afterthought.
Storms don't wait for business hours
When a hailstorm rolls through Peel or a windstorm off the lake tears shingles loose, we get people out to assess it and get you a straight answer, not a runaround.
Materials built for this climate
We spec underlayment and ice-and-water shield rated for Canadian winters, not the minimum code allows. Cheaping out here costs you double in five years.
Most roof damage starts invisible
A pinhole in flashing. A shingle tab lifted by wind. Ice damming at the eaves after a January thaw. None of it looks urgent from the driveway. By the time you see a stain on the ceiling, water's usually been getting in for a season or two, working its way through the deck and insulation. Ontario's freeze-thaw cycle turns small gaps into big ones fast — water expands roughly nine percent when it freezes, and it does that expanding right inside your roof assembly.
We inspect before we quote, not after
Every job starts with someone climbing up and actually looking — not a drone flyover, not a guess from Google Maps. We check flashing, valleys, vents, deck condition, and drainage before we tell you what it costs. You get a plain-language rundown of what's failing, what's still fine, and what it'll take to fix it properly. No upselling a full tear-off when a repair will hold for years.
What we do
Eight core services, one crew that knows the GTA roofline top to bottom.
Flat & Commercial Roofing GTA
TPO, EPDM and modified bitumen systems for commercial buildings and low-slope residential additions across the GTA.
Learn moreGutter Installation & Repair GTA
Seamless aluminum gutters sized for Ontario downpours, plus repair for sagging or leaking systems.
Learn moreRoof Inspection Services GTA
A thorough, honest walk of your roof with a written rundown of what needs attention now versus later.
Learn moreRoof Leak Repair GTA
Tracking a leak to its actual source and fixing that, not just patching the ceiling stain.
Learn moreRoof Repair Services GTA
Targeted fixes for shingles, flashing, vents and valleys that don't need a full replacement.
Learn moreRoof Replacement Services GTA
Full tear-off and re-roof when repair is throwing good money after bad, done with proper ventilation and underlayment.
Learn moreStorm & Hail Damage Roof Repair GTA
Targeted fixes for shingles, flashing, vents and valleys that don't need a full replacement.
Learn moreWhy GTA homeowners call FlatRoof.ca
We're not the biggest outfit in Ontario and we're not trying to be. We're trying to be the crew you'd actually recommend to your neighbour.
Straight answers
If your roof doesn't need replacing, we'll tell you that, even though the bigger job pays more.
We work the whole GTA
Toronto, Peel, Halton, York, Durham — one crew, one standard, no subcontracting the job out to strangers.
Climate-appropriate materials
Everything we install is spec'd for freeze-thaw cycling and lake-effect snow loads, not a milder climate.
Email keeps a paper trail
Quotes, scope and scheduling in writing, so there's no argument later about what was agreed.
Tools-first mindset
We talk in terms of underlayment, fastening patterns and flashing details, not marketing buzzwords.
Insurance-ready documentation
Photos and written assessments after storm events, formatted the way adjusters actually want them.
How a job goes from call to completion
Same process whether it's a Milton bungalow or a Toronto plaza roof.
- 1
You reach out
Email us with the address and what's going on — a leak, a storm, or just wanting eyes on an ageing roof.
- 2
We inspect
Someone gets up on the roof and looks at deck, flashing, drainage and ventilation before quoting anything.
- 3
You get a written quote
Scope, materials and price laid out plainly, sent by email so you can read it on your own time.
- 4
We do the work
Scheduled around weather windows that make sense for the job — you're not guessing when the crew shows up.
- 5
We walk it with you after
A final look-over so you know what was done and what to watch for going forward.
Common questions about FlatRoof.ca
Do you only do flat roofs?
No — flat and low-slope is a big part of our work, but we do full shingle roof repair and replacement too, plus gutters and storm repair. The name comes from where we started, not where we stopped.
Can I call you directly?
We handle everything by email — quotes, scheduling, follow-up. It keeps a written record for you and lets us give your inspection our full attention instead of juggling it against a ringing phone. Email us or request a quote and we'll get back to you.
Do you work outside Milton?
Milton's home base, but we cover the whole GTA — City of Toronto, Peel, Halton, York and Durham regions.
How fast can you look at storm damage?
Depends on the volume of calls after a given storm, but we prioritize active leaks and visible structural concerns. Email us with photos if you can and we'll triage from there.
Do you handle insurance claims?
We don't file the claim for you, but we provide written assessments and photo documentation formatted for adjusters, which speeds most claims along.
What roofing materials do you install?
Asphalt shingles rated for Canadian climates, TPO and EPDM for flat sections, modified bitumen where it's the better fit, and matched flashing and underlayment for all of it.
Pick your area
Serving the Entire Greater Toronto Area
5 regions, 28 communities — wherever you are in the GTA, FlatRoof.ca is close by. Pick your area to see how we can help.
Get a roof assessment before the next freeze-thaw cycle finds the weak spot
Email us your address and what you're seeing. We'll tell you straight what it needs.
Email Us for a Free EstimateWeather is hard on your roof — email us for a same-day inspection.
Summer roofing conditions in Milton, ON
Summer heat and thunderstorms around Milton, ON put roofs through intense UV, expansion, and sudden wind and hail. Heat accelerates shingle aging, so summer is prime time for inspections and repairs.
Proudly Serving Milton, ON
Local, on-time service throughout Milton and the surrounding area.