Exterior Wall Placement: Outside, Center, Inside — Room Sketch 3D
How Exterior Wall Placement works in Room Sketch 3D and how it changes your Gross and Usable area. On a 16×12 rectangle, toggle Outside, Center, and Inside and watch the dimension chains and areas update (224/192 → 207/177 → 192/163).
1 minUpdated 2026-06-19
Read the full step-by-step guideWhat this video covers
- 1First: how rooms are measured (face to face)
- 2Gross Area vs Usable Area
- 3Outside mode — the line is the inside
- 4Center mode — walls straddle the line
- 5Inside mode — the line is the outside
- 6Putting it together
Prefer to read along? See the full written walkthrough with screenshots.
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