Asphalt fibreglass shingles
Canada's most popular roofing choice — a wide array of styles and colours to suit almost any budget and design. Architectural shingles add dimension and durability over standard 3-tab.
Roof replacement, repair & ventilation in Orillia
A & G Roofing protects homes, cottages and businesses across Orillia, Simcoe County and Muskoka — a CertainTeed 5-Star SELECT ShingleMaster building roofs the right way since 1967.
4.9 / 598 Google reviewsSince 1967Almost 60 years local5-StarCertainTeed ShingleMaster
From the quote to the installation, A&G Roofing was outstanding. They even helped me out with my deck design that was to be put on top of the new flat roof. If you need to have your roof done, please look no further — they will do an outstanding job.
From my first phone call where I reached Violet, to Josh for the quote, then Glenn and his team on site — they arrived as scheduled, worked quickly and efficiently, noted and fixed problems with the adjacent siding, and cleaned up the site beautifully.
I owned a large high-end roofing company based in Toronto for 35 years. I chose A&G partly based on reviews, but also on the instant knowledge and credibility Josh and Adam portrayed. They did not disappoint.
Our roofing services
From a single leak to a full re-roof, A & G handles it — pick what you need and we'll follow up to book an assessment.
Roof replacementFull tear-off and re-roof, or a new build — asphalt, metal, cedar and composite systems installed to code.
Roof repairsLeak detection, storm and wind damage, ice-dam and flashing repairs — including emergency service.
Roof inspectionsSeasonal, post-storm, and real-estate or insurance inspections with a clear report and plan.
Roof maintenancePreventative maintenance, gutter and flashing upkeep, and long-term care built for snow country.
Roof ventilationBalanced attic intake and exhaust, calculated to the 1/300 rule to stop ice dams and premature wear.
Recent A & G roofs
Real projects across the region — tap any photo to see it larger.
Roofing materials we install
A roof is an investment. We install the full range and help you match the system to your home, climate and budget.
Steel & standing seam metal
Classic styling, low maintenance and lifetime performance in a wide range of profiles. Built to shed heavy snow and stand up to the freeze-thaw cycles of central Ontario.
Composite shake & slate
Euroshield and similar composites give the true-to-life look of slate or cedar with the resilience of up to 95% recycled rubber — hail-tough and virtually maintenance-free.
Residential low slope
For roof sections below a 2-in-12 pitch we install commercial-grade membrane systems (EPDM/TPO) engineered to stay watertight where shingles cannot.
Cedar shake & shingles
A natural, rustic choice with real character. We guide you through the differences in grades, styles and accents so the roof matches the home.
Why homeowners choose A & G Roofing
The area's only 5-Star ShingleMasterA & G is the only CertainTeed SELECT ShingleMaster™ in the area — verifiable in CertainTeed's Find-a-Pro directory.
Building roofs since 1967Almost 60 years protecting homes, cottages and businesses across Orillia, Simcoe County and Muskoka.
Insured, WSIB & heights-certifiedFully insured, WSIB covered and working-at-heights certified — recognized "Best Business" five years running.
Digital transparency with CompanyCamLive progress photos document the parts of the build you never see, so nothing is hidden behind the shingles.
What happens after you get in touch
1Send your detailsTell us your address and what the roof needs — add photos if you have them.
2We assess the roofOur office follows up to book an on-site assessment at a time that suits you.
3Get a clear estimateYou receive a written estimate with materials, scope and workmanship warranty spelled out.
Common roofing questions
Almost 60 years of local experience and a reputation built on quality and transparency. We hold technical mastery as a CertainTeed 5-Star SELECT ShingleMaster, and in Standing Seam metal and Euroshield composite. Our "1% difference" standards and CompanyCam progress photos mean the work is done right and documented.
Yes. We are certified installers for Standing Seam metal and Euroshield composite roofing (up to 95% recycled rubber with the look of slate or wood), and we install asphalt, low-slope membrane and cedar systems as well.
We are based at 4277 Carlyon Line in Severn and serve Orillia, Simcoe County, Muskoka and surrounding communities including Coldwater, Brechin, Port Carling, Gravenhurst, Bracebridge and Huntsville.
Yes — a roof is a breathing system. Without balanced intake and exhaust, trapped heat causes ice dams in winter and premature failure in summer. We calculate your attic's specific ventilation needs as part of the job.
Full manufacturer warranties on all materials, plus A & G's own 10-year workmanship warranty on the installation.
Send your details through the request form or call (705) 325-1805. Our office follows up to book an assessment and provide a clear written estimate — no pressure, no guesswork.
Ready to sort your roof?
Request a free estimate or call (705) 325-1805 and our office will follow up — no pressure, no guesswork.
Request a free estimate
Tell us about your roof and we'll follow up to book an on-site assessment. Prefer to talk? Call or text (705) 325-1805.