Bay Window Replacement in Red Deer, AB, with Bow & Custom Shapes
New bay and bow windows with a warm seat and a sealed roof, plus arched, sloped and eight-sided windows built for openings no stock size will fill.
Updated
Bay, bow and shaped windows built to fit
Red Deer Custom Windows does bay window replacement in Red Deer, and bow windows and custom windows too. That means round-top, rake, octagon and circular peak shapes. A bay is three windows angled out from the wall. A bow is four to six in a shallow arc. Either one hangs off your house with a seat, a roof and support all its own. Swap the glass and leave a rotten seat behind? That's half a job.
Red Deer Custom Windows provides bay and bow window replacement to Red Deer and surrounding Alberta towns, including Lacombe, Sylvan Lake, Blackfalds, Innisfail, Ponoka, Stettler and Rocky Mountain House. We've been building odd shapes into Central Alberta walls since 2001, and the owner measures every bay personally before anything is ordered. Ours go in with insulation in the seat, fresh flashing on the roof and real support underneath. Measure twice, order once.
Why people trust us with a bay or bow
- Seat and head board insulated, so the bump-out stops being the cold corner
- Fresh flashing and a sealed roof cap over every bay
- Steel cables or brackets strong enough to carry triple pane glass
- Custom shapes measured on site by our crew, no catalogue guessing
- Lifetime window warranty, plus our 5-year installation warranty on the work
Types of bay, bow and custom windows
Each of these has its own build and its own trouble spots. Our crew puts in these five more than anything else.
Bay Windows
A bay window has a big centre unit with a narrower window on each end, turned back toward the wall at 30 or 45 degrees. Make the end windows casements and the whole bay opens for air. Living rooms and dining rooms, mostly, anywhere somebody wants a seat in the sun with a coffee.
Bow Windows
Four to six matching windows laid out in an arc. Less sharp than a bay, a bow reads rounder from the street and frames a broader slice of the yard. Normandeau and Eastview are full of them, mostly on houses from the 70s and 80s, and plenty of those first bows are tired now.
Round-Top Windows
A round-top is an arched or half-circle window, usually sitting over a door, a picture window or two casements. Round top windows are almost always fixed. It gets the same frame colour and the same glass as the windows under it, so from the street the set looks like one window.
Rake Windows
The rake window has a sloped top that follows the roofline, up in gable ends or under a vaulted ceiling. Builders loved them through the 90s and early 2000s. No two angles are quite the same, so every one gets built to the exact pitch of its opening.
Octagon and Circular Peak Windows
An octagon window is an eight-sided accent, often in a stairwell or front entry. A circular peak is an arch that comes to a point. Both are fixed panes, cut to the shape of the hole you already have.
Should I repair or replace my bay window?
Replace it when the seat droops, the wood under it or the roof turns soft, or fog shows up in more than a single sealed unit. A repair only pays if the frame is solid and just one piece has quit. Most bays our crew pulls out in Red Deer were built in the '80s and '90s.
An old bay dies at the seat and the roof. Lots of them have a bare plywood seat with almost nothing underneath, so the bump-out holds cold like a root cellar. Water slips past tired roof flashing and soaks down into that plywood. We've seen seats you could push a thumb through. Patching the windows alone is a new liner in an old pair of winter boots: fine if the shell is sound, a waste once the sole has cracked. Ice on the bottom rail by breakfast? Check the seat first.
Signs your bay window needs replacing
- The seat board feels cold or sags in the middle
- Fog or moisture between the panes of one or more windows
- Water stains on the ceiling or wall below the bay
- Frost creeping up the corners where two windows meet
- Gaps or cracked caulking where the bay joins the house
Bay window vs bow window: what is the difference?
Count the windows. A bay has three, a wide centre pane flanked by two narrow ones set at 30 or 45 degrees outward. A bow window has four to six identical units in an arc. The bay sticks out further and makes a deep seat, while the bow gives up depth for a wider view and a rounder shape.
Both take triple pane glass, with casements at each end that open. With an older house the choice usually follows the opening and roof that are already there. Original wood bays keep us busy on window replacement in Ponoka and around Innisfail. For the glass itself, read up on our triple pane windows.
- Feature | Bay window | Bow window
- Number of windows | 3 | 4 to 6
- Shape | Angled at 30 or 45 degrees | Gentle curve
- Projection from wall | Deeper | Shallower
- Best for | A seat and more floor space | A wide view
Pricing
How much does bay window replacement cost in Red Deer?
Bay window replacement in Red Deer typically costs $1,800 to $8,000 installed in 2026. Putting new units into a solid old shell is the cheap end. A full new bay or bow, seat and roof and triple pane included, runs toward $8,000. Round-top windows and other custom shapes add $500 to $3,500 apiece.
Ranges from a 2026 Red Deer window price guide. Your written quote depends on size, glass, opening style and the state of the existing seat and roof.
Contact Us| Job | What's included | Installed price (2026) |
|---|---|---|
| Windows only, bay shell kept | 3 new units in the existing frame | $1,800 to $4,000 |
| Full bay unit | Windows, seat, head board, roof and support | $3,500 to $6,500 |
| Full bow unit | 4 to 6 windows, seat, roof and support | $5,000 to $8,000 |
| Round-top or octagon accent | One fixed custom shape | $500 to $3,500 |
How we replace a bay window
Measure and check
The owner measures the opening and pokes at the seat, roof and framing for rot or sag.
Build to size
Your bay or shaped window is built to those numbers at the factory, usually 4 to 6 weeks.
Remove and install
Old bay out, opening repaired, new unit hung on its support, then flashing and foam. One day, most jobs.
Insulate and finish
Seat and head get insulated, trim and capping go on, and the old bay leaves on our trailer.
FAQ
Bay and custom windows FAQ
How long does bay window replacement take?
Most bay and bow windows take our crew one day once the unit arrives. Building it to size takes about 4 to 6 weeks from our measuring day. If the framing under the old bay has rotted, figure another half day, and you'll hear about it from us before any wood gets cut.
Can you turn a flat window into a bay window?
In a lot of houses, yes. A bay can usually go where a flat window of the same width sits now, with a small roof and support added outside. Widening the opening is different: it needs a new header, and the City of Red Deer requires a building permit for that structural change.
Why is my bay window seat so cold?
Older bays were often framed with a hollow seat and a hollow head, and nobody filled either one. Cold air also sneaks in where the bay meets the wall. We build new ones insulated top and bottom and seal them to the house with foam and tape. The seat ends up close to room temperature. Your cat will notice.
Do round-top and other custom windows open?
Most stay fixed, since arched and sloped sashes are hard to open and harder to seal. The usual move is a fixed round-top or rake window over opening casements. You keep the shape up top and still get fresh air down where you can reach it.
Can a bay window have triple pane glass?
Yes, every unit in a bay or bow can be triple pane. The whole thing gets heavier, though, so the support needs to match: steel cables up into the roof framing or brackets under the seat. In our experience that's where cheap installs cut corners, and on a bay facing a west wind it matters most.