Window and Door Replacement in Mississauga
Mississauga is the west end of the Fortress service area. We run it from our head office at 4725 Sheppard Ave E in Scarborough, and we have been installing replacement windows, entry doors, patio doors and eavestrough across the GTA since 1989. Erin Mills, Meadowvale, Streetsville, Lorne Park, Clarkson, Port Credit, Applewood and Malton are all on the route. Family-owned, Ontario-built windows. Call (416) 291-5795.
Reviewed by Steve McCue and Steve Mercer, owners, Fortress Windows & Doors Inc.
What Mississauga homes usually need
Erin Mills and Meadowvale
Built mostly from the mid-1970s through the 80s, these are the biggest concentration of same-age windows in Mississauga. The original aluminum sliders and early vinyl are 40 years old, and the sealed units have long since fogged. We replace them full-frame, because the wood bucks behind 1970s aluminum are usually the real problem.
Lorne Park, Clarkson and Port Credit
Larger lots, older homes, and a lot of custom rebuilds with oversized and shaped windows. Near the lake the wind load is real; we spec heavier frames and multipoint hardware on anything facing south. Wood-look and colour-matched exteriors keep the house in character.
Applewood, Cooksville and Malton
1960s bungalows and side-splits with single-pane wood or aluminum behind a storm window. These get a full-frame replacement and, in a lot of cases, a larger basement window at the same time while the crew is there.
Entry and patio doors
Insulated steel or fibreglass entry systems with the frame and threshold replaced, and vinyl sliding, garden or French patio doors for the backyard. A new slab in a 40-year-old frame does not fix the draft.
Eavestrough and downspouts
Five-inch seamless aluminum, formed on site. Mississauga sits on heavy clay, so we extend downspouts to where the grading actually carries water away from the foundation.
Why Mississauga homeowners call Fortress
There is no shortage of window companies in Mississauga. What Fortress brings is 37 years of installs, a real office you can visit, and a phone number that rings at that office. We book Mississauga measures and installs the same way we do Scarborough ones, and the same crews do the work.
Installing since 1989
Family-owned and still run by the family. Thousands of GTA homes over 37 years.
HomeStars winner every year since 2014
Verified reviews from real installs. Read them before you book.
Canadian-made, CSA A440 certified, Energy Star
Built in Ontario, certified to CSA A440, Energy Star rated for Canada.
City of Mississauga permits handled
Same-size replacements need no permit. Enlarging an opening or adding a basement egress window does. We prepare the drawings and file with the City.
Financing available
Flexible financing on windows and doors so a whole-house job in Mississauga does not have to be split across several years.
How a Mississauga job runs
It starts with a measure at your house, not a quote over the phone. We check every opening, the sills and the wall around them, and give you one written price for the whole job. That price includes:
- Written quote with no hidden extras
- Removal and disposal of old windows and doors
- Low-expansion foam around every frame
- Colour-matched exterior aluminum capping
- Interior trim and caulking
- Permit drawings and filing where the City requires it
- Same-day clean-up
- Warranty registered in your name
Service Steps
1. Book a measure
Call (416) 291-5795 or use the quote form. Tell us which openings and roughly when.
2. In-home measure
We measure every opening, check for rot or water damage, and go through frame colour, grilles and glass options with you.
3. One written price
One number for the whole job. It only changes if you change the scope.
4. Build and install
Custom-built to your measurements, which takes a few weeks and longer in spring. Most Mississauga homes are installed in one to two days.
5. Walk-through and warranty
We walk every unit with you, show you the hardware, and register the warranty.
Need windows, doors or eavestrough replaced in Mississauga?
What changes after the install
Lower heating and cooling bills
Going from 1970s aluminum or failed double-pane to low-E argon-filled glass shows on the Enbridge bill the first winter and on the hydro bill the first summer.
No more cold pocket by the window
That cold spot by the living room window is the frame leaking, not the glass. Foamed frames fix it.
Quieter rooms
Sealed double or triple glazing takes the edge off the 403, the QEW, Dundas and the Pearson flight path over Malton.
Rebates when they are open
Ontario and federal energy rebate programs change. We check what is open when you book and tell you what your job qualifies for.
Drier basement
Eavestrough pitched properly with downspouts extended away from the wall is the cheapest basement waterproofing in Mississauga.
Resale
Home inspectors look at the windows first. New, warrantied units go in the listing; 40-year-old aluminum sliders come up in the negotiation.
Other areas we cover
Frequently Asked Questions
Do I need a permit to replace windows in Mississauga?
Not for a like-for-like replacement in the same opening. You need a City of Mississauga building permit if the opening is being enlarged or a new one cut, which covers most basement egress windows. We prepare and file the permit as part of the job.
Do you really cover Mississauga from Scarborough?
Yes. Mississauga jobs are measured and installed by the same crews that do our Scarborough and Durham work. The drive is part of the job; it does not change the price or the schedule.
How long does window replacement take?
A typical Mississauga house with 10 to 15 windows is installed in one to two days once the windows arrive. Lead time from measure to install depends on the season; spring and early fall are the busiest.
Where is Fortress located?
Our head office is at 4725 Sheppard Ave E, Unit 405, Scarborough, ON M1S 5B2. Call (416) 291-5795. We also have a Barrie office at 15 Pepin Ct for Simcoe County.