Roofs

Roofs in Pascal are drawn, not picked from a catalog: you trace a rectangular footprint over your building and shape everything else — type, pitch, overhang, trims — afterwards.

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Give the roof its own level

A roof sits on the level you draw it on, so the usual workflow is to roof from one level up:

1. Click the + at the top edge of the level selector (Add level above).
2. Switch the level view to Stacked (the Levels menu in the toolbar at the top right of the canvas) so the walls below stay visible while you work.
3. Draw the roof on that new, empty level — its corners snap to the wall corners of the level below, so it lands exactly on top of your walls.

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Draw a roof

Pick Roof in the Build tab, then:

1. Click to set the first corner of the footprint.
2. Move the cursor — a live ghost of the roof follows — and click the opposite corner to place it.

While you draw, the corners snap magnetically to the wall corners and edges of the active level and the level below, so tracing a roof that sits exactly on your walls takes seconds. New roofs start as a gable with a 40° pitch, ready to be reshaped.

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Roof types

A roof is a container of one or more segments, and the type is set per segment. Select the roof, then click again to select the segment inside it. The Roof Type section of the properties panel offers seven types: Hip, Gable, Shed, Flat, Gambrel, Dutch, and Mansard.

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Shape the roof

The segment panel gives you sliders for every dimension:

• Footprint — Width and Depth (0.5–25 m).
• Wall Height — the height of the walls the roof generates beneath itself (0–5 m).
• Pitch — the slope Angle (0–60°), with quick presets 3/12, 6/12, 9/12, and 12/12.
• Structure — Wall Thick., Deck Thick., Overhang, and Shingle Thick.
• Shape-specific controls appear for the curvier types — kink position for gambrel, waist controls for mansard and dutch roofs.
• Position and Rotation sliders (with -45° / +45° buttons) place the roof exactly, and the Move action lets you drag it in the scene — press R while moving to rotate it in steps.

Roof surfaces are painted with the Painting tool, like walls and floors — see Materials and paint.

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Trim a roof

Turn on Show trim planes in the segment panel to reveal draggable trim handles on each side of the roof. Drag a handle to cut the roof back along that side — a red section preview shows exactly what’s being removed. Use trims to fit segments together or notch a roof around another volume.

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Complex roofs

• Add segments — draw another footprint while a roof (or one of its segments) is selected and the new rectangle joins that roof as an extra segment. That’s how you build L- and T-shaped roofs.
• Duplicate — the Duplicate action clones the whole roof and hands it to you in move mode, ready to drop elsewhere.
• Features — with the Roof tool active, the Build tab shows a Features grid of roof accessories (skylights, chimneys, dormers, vents, and more). Pick one and click the roof segment you want it attached to.

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Roof walls and openings

Each segment is a complete volume: it generates its own walls under the roof plane, including the triangular gable ends. Those faces behave like regular walls for openings — you can place doors and windows straight into a gable.

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Delete a roof

The roof panel’s Delete action removes the whole roof; a segment’s Delete removes just that segment and keeps the rest. Selecting a roof and pressing Delete or Backspace works too.