Find the Best Windows & Doors Companies Across Canada
Hand-picked local experts, vetted through our 30-point review. Compare the top 3 in your city and get free quotes — in one form.
How Mullions Works
Find your city
Browse our directory of Canadian cities and open your local windows & doors page.
Compare the top 3
See vetted local companies side by side — real reviews, services, and pricing.
Get free quotes
Send one quick form and all three top companies reach out. No cost, no obligation.
Get 3 Free Quotes in Your City
Pick your city and describe your project. We'll send your request to the top vetted companies there — free, no obligation.
Featured Cities
Explore our vetted Top 3 windows & doors companies in these cities:
Why Homeowners Trust Mullions
Hand-selected, not pay-to-win
Every company is vetted for reputation, workmanship, and service before it's listed. Rankings aren't for sale.
Built for Canadian homes
Local climate, local building codes, local rebates. Our city guides give advice that actually applies to you.
One form, three quotes
Skip the phone tag. Describe your project once and the top local companies compete for your business.
Guides & Advice
View all articlesBasement Egress Window Requirements in Canada
The minimum sizes a bedroom window must meet, when enlarging an opening needs a permit, and what a basement egress project realistically costs.
MaintenanceHow Long Do Windows Actually Last in Canada?
Sealed units, frames and hardware wear out on different schedules. What fails first, what a warranty really covers, and how to tell a tired window from a dead one.
DoorsWhat a Patio Door Replacement Costs in Canada (2026)
Sliding, French, or lift-and-slide — what each style costs installed, which extras are worth paying for, and the structural work that can double a quote.
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Browse Windows & Doors Companies by City
Choose your province, then your city. Linked cities have vetted listings ready.
Ontario
Quebec
- 📍Montreal
- 📍Quebec City
- 📍Laval
- 📍Gatineau
- 📍Longueuil
- 📍Sherbrooke
- 📍Saguenay
- 📍Levis
- 📍Trois-Rivières
- 📍Terrebonne
- 📍Repentigny
- 📍Saint-Jean-sur-Richelieu
- 📍Drummondville
- 📍Granby
- 📍Blainville
- 📍Saint-Jérôme
- 📍Shawinigan
- 📍Val-d'Or
- 📍Rimouski
- 📍Victoriaville
British Columbia
Alberta
Manitoba
Saskatchewan
- 📍Saskatoon
- 📍Regina
- 📍Prince Albert
- 📍Moose Jaw
- 📍Yorkton
- 📍Swift Current
- 📍North Battleford
- 📍Estevan
- 📍Weyburn
- 📍Humboldt
Nova Scotia
New Brunswick
- 📍Moncton
- 📍Fredericton
- 📍Saint John
- 📍Bathurst
- 📍Miramichi
- 📍Edmundston
- 📍Dieppe
- 📍Campbellton
- 📍Oromocto
- 📍Woodstock
Newfoundland and Labrador
- 📍St. John's
- 📍Mount Pearl
- 📍Corner Brook
- 📍Gander
- 📍Grand Falls-Windsor
- 📍Happy Valley-Goose Bay
- 📍Stephenville
- 📍Labrador City
- 📍Clarenville
- 📍Marystown
Prince Edward Island
- 📍Charlottetown
- 📍Summerside
- 📍Montague
- 📍Alberton
- 📍Souris
- 📍Kensington
- 📍Georgetown
- 📍Tignish
- 📍Borden-Carleton
Northwest Territories
- 📍Yellowknife
- 📍Hay River
- 📍Inuvik
- 📍Fort Smith
- 📍Fort Simpson
- 📍Behchoko
- 📍Norman Wells
- 📍Tuktoyaktuk
- 📍Fort Resolution
Yukon
- 📍Whitehorse
- 📍Dawson City
- 📍Watson Lake
- 📍Haines Junction
- 📍Faro
- 📍Carmacks
- 📍Mayo
- 📍Teslin
- 📍Ross River
Nunavut
- 📍Iqaluit
- 📍Rankin Inlet
- 📍Arviat
- 📍Baker Lake
- 📍Cambridge Bay
- 📍Pond Inlet
- 📍Igloolik
- 📍Kugluktuk
- 📍Cape Dorset