Adding bay and corner bay windows
Bay windows project out from one wall; corner bays wrap two walls at a building corner. Here's how to place each.
A bay window pushes a run of glass out past the wall, adding a sunny alcove inside and a bump-out outside. A corner bay does the same across two walls that meet at a building corner, for a wider, wrap-around view. RoomSketch3D carves the alcove into the wall for you and renders the glass in 3D.
Both start from the Bay Window tile. This page covers choosing the type, setting the width (Chord) and how far it pushes out (Project), and reading the result in 3D.
Step by step
- 1
Pick the type
Open the Build panel (on a phone, Structural & Interior). In the Structural section tap Bay Window, then pick Regular (bumps out from one wall) or Corner (wraps two walls at an outside corner).
Bay Window sits in the Structural section; tap it, then pick Regular or Corner. - 2
Tap the wall (or two walls)
Bay windows go on outside walls only. Regular: tap the outside wall where the bay projects; it lands where you tap. Corner: tap the first outside wall, then tap the adjoining wall that lights up (the prompt reads Pick an adjoining wall (highlighted)).
A bay window projects outward and carves an alcove into the wall. - 3
Set its size and style
Select the bay. In its settings, Chord is its width along the wall (typically 60–120 inches) and Project is how far it pushes out (16–36 inches). The same settings hold Style (Angled, Box or Bow), Angle, Panels, height Preset and Heights (Sill, Panel, Header), Glass, Base, Roof and Frame.
A corner bay window wraps two walls — tap one wall, then the one beside it. - 4
Verify in 3D
Switch to 3D. The bay renders with the alcove inside and the protrusion outside. Walk through it to confirm.
Tips
Standard sizes
A bay is usually 60–120 in wide and projects 16–36 in. Keep it in that range unless you're modelling a specific window — deeper than that and it starts to need its own little roof.
Add a window seat
The alcove a bay carves is the right depth for a window seat — drop a bench from the catalog into the recess.
Common mistakes
Placing a bay on an interior wall
A bay projects outside, so it belongs on an exterior wall — on an interior wall it has nowhere to bump out to.
Over-projecting
A projection past about 36 in reads as a bump-out room, not a window. Keep it in the 16–36 in range for a true bay.
Frequently asked questions
How wide should a bay window be?
Typically 60–120 in along the wall (Chord), projecting 16–36 in (Project). Set both in its settings after placing it.
What's the difference between a bay and a corner bay?
A bay projects from one wall; a corner bay wraps two walls at a building corner. To place a corner bay, tap one outside wall, then the adjoining wall that lights up.
Do I have to cut the wall first?
No — placing a bay carves the alcove into the wall automatically. You don't remove wall separately.
Can I see it in 3D?
Yes. Switch to 3D and step into the alcove; the glass and the exterior bump-out render at their true size.
Start designing your room
Put this into practice in the floor planner: draw it, furnish it, walk through it in 3D — on web, iOS, and Android.
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