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Cut an Opening Through a Floor — Room Sketch 3D

Punch an opening straight through a floor for ducting, a plumbing run, or a utility shaft: drag a rectangle, tune the corners, and hit Finalize. It reads through to the floor below in 3D, keeps furniture clear, and comes out of your square-footage totals.

1 minUpdated 2026-08-14
Read the full step-by-step guide

What this video covers

  1. 1Pick the Floor Hole tool
  2. 2Drag out the opening
  3. 3Tune it, then Finalize
  4. 4See it read through in 3D
  5. 5Edit or remove it later

Prefer to read along? See the full written walkthrough with screenshots.

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