Bay windows are a defining feature of Chicago’s residential streetscapes — from Victorian-era greystone facades in Lincoln Square to craftsman bungalows in Beverly. Installing or replacing a bay window in a Chicago home requires matching the right profile, projection, and roofline to what is already there. We assess your home’s structure before recommending any unit.
If your existing bay window is failing — rotted sill, fogged glass, or a leaking roof cap — we remove the entire unit and replace it correctly. If you are adding a bay window to a flat wall for the first time, we manage the structural opening, framing, and installation from start to finish. No subcontractors involved.
Inspect the existing opening, structural framing, and sill condition.
Confirm projection angle, seat board height, and roofline clearance.
Remove the old unit or frame the new opening as required.
Install and level the bay window unit with proper flashing and support.
Finish the roof cap, seat board, interior trim, and caulk completely.
Bay windows are heavier and more complex than standard replacements. The roof cap, seat board, and support cables or knee brackets all need to be right — one weak point leads to water intrusion and structural movement. We have installed bay windows in Chicago homes across neighborhoods from Wicker Park to Mount Greenwood, and we know what Chicago’s weather demands from every joint and seal.
Buyers want long-term home comfort without sudden cold chills. Enjoy warm rooms with tight seals that hold up over time. Heavy Libertyville snow seasons test window frame durability every single year. Our installations stand up to the weather.
A properly installed bay window adds usable interior space, brings in more natural light, and changes the look of a room completely. In Chicago, where lot sizes are tight and square footage matters, that projected floor space — even a few feet — makes a real difference. It also adds measurable curb appeal and resale value to the property.
Call us to discuss projection options, glass packages, and trim details — we will match the right bay window to your Chicago home and your budget.
Ready to add a bay window or replace a failing unit on your Chicago home? Get a free estimate from Rooster Windows And Doors. We handle structural framing, installation, roof cap, trim, and cleanup — all with our own crew, no subcontractors. Call (847) 400-2544 or request a quote online.
Yes, we serve Chicago directly from our Libertyville location. We install and replace bay windows across Chicago neighborhoods — from the North Side and Northwest Side to the South Side. Our own crew handles every job with no subcontractors.
A bay window typically has three panels — a large fixed center pane flanked by two angled side units — and projects at 30 or 45 degrees. A bow window uses four or more equal panels in a gentle curve. Both add projected space and light; the right choice depends on your wall width and the look you want. We can show you examples of both.
Not every wall is suitable without structural work. We inspect the framing, load path, and foundation below the proposed opening before committing to a plan. Most Chicago bungalows and two-flats can accommodate a bay window addition with proper header installation — we assess that on-site.
A straight replacement of an existing bay window typically takes one full day. A new installation into a flat wall — which involves framing and structural work — usually takes two days. We confirm the exact timeline during your free estimate.
The most common causes are a failed roof cap flashing, deteriorated caulk at the side joints, or a rotted seat board that holds water against the frame. Chicago’s freeze-thaw cycles accelerate all three. We inspect each of these points before recommending repair or full replacement.
Call (847) 400-2544 or visit roosterwindowsanddoors.com to request a free estimate. We visit your Chicago home, assess the wall structure and existing opening, and give you a clear scope and quote before any work begins.
