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Adding fireplaces and wall openings

Add a fireplace as a focal point, or an open passthrough between rooms — both show up in 2D and 3D.

4 min readUpdated 2026-06-10

Fireplaces and doorless openings are wall fixtures with no swing arc. Both live in the Build Panel.

Step by step

  1. 1

    Fireplace

    Build Panel → Fireplace section. Three tiles: Fireplace (standard wall-mounted), Corner Fireplace (45° in a corner), Dual Fireplace (interior wall, two faces). Click, then click on the wall or corner. Set width, hearth height, and depth in the Inspector.

    A standard wall-mounted fireplace, placed on a wall and dimensioned.
  2. 2

    Opening

    Build Panel → Doors section → Opening tile. Click, then click the wall. Set width. No door, no swing arc — just a passage.

    An opening is a doorless passage — width set, no swing arc.

Tips

Keep the hearth clear

Smart Flow Check keeps furniture about 18 in off the fireplace face — the hearth zone. Float the sofa just outside that band.

An opening frames the view

A doorless opening reads as a wide passage between rooms. Set its width to the flow you want — 36 in for a walk-through, wider to connect two spaces.

Common mistakes

Blocking the fireplace

A piece inside the hearth zone trips Flow Check's 'blocks fireplace' warning. Move it clear of the face.

Using a door where you meant an opening

If you don't want a swing, use the Opening tile — it has no leaf and no swing arc to keep clear.

Frequently asked questions

How do I set the fireplace size?

Select it and set Width and Depth in the Inspector. Pick the style — flat, corner, or dual — when you place it.

What's the clearance in front of a fireplace?

Smart Flow Check keeps furniture about 18 in off the face. Anything inside that trips the 'blocks fireplace' warning.

What's the difference between an opening and a door?

An opening is a doorless passage — no leaf, no swing. A door has a swinging (or sliding) leaf and a swing arc Flow Check protects.

Can I put a fireplace in a corner?

Yes — choose the corner style and click the corner where two walls meet.

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