Start from the plan
Draw or place a plan — the roof fits whatever perimeter you have.
Builder feature · free · in your browser
Fit a Roof to Your Plan —Gable, Hip, Flat, Shed
You choose the roof; Builder does the carpentry. All four types — gable, hip, flat and shed — are auto-fitted to the exact perimeter of your plan, and gable and hip roofs fit the minimum-area oriented rectangle, so odd-shaped plans still get an honest roof. Gable ends and shed wedges infill with the siding you picked. Change the plan and the roof follows.
How it works — in the app
Pick the roof type
Gable, hip, flat or shed — four types, one click each.
It fits itself
The roof auto-fits to the exact perimeter — no measuring, no fiddling with ridge heights.
Match the siding
Switch the siding and the gable ends and shed wedges re-infill to match.
What you get
Fit a roof is one of fifteen feature pages covering what ships in Builder today — every claim here maps to a shipped, verified feature. The list below is the concrete surface:
- Four roof types: gable, hip, flat and shed
- Auto-fitted to the exact perimeter of your plan — every time you change it
- Gable and hip fit the minimum-area oriented rectangle, so L-shapes and odd plots stay honest
- Gable ends and shed wedges infilled with the chosen siding
- Multi-level plans welcome — storeys, foundation and slabs already follow the drawing
- Change your mind freely: every roof change is one undoable step
FAQ
My plan is not a rectangle — will the roof still fit?
Gable and hip roofs fit the minimum-area oriented rectangle around your plan, which is how a real carpenter would strike the roof. Flat and shed follow the perimeter itself. Either way the fit is automatic.
Can I change the roof type later?
Any time, in one step. The roof is auto-fitted to the current perimeter, so switching from gable to hip — or shrinking the plan — refits it instantly, and Ctrl+Z brings the old one back.
Does the roof arrive finished?
It arrives fitted and infilled: gable ends and shed wedges are closed with the siding you chose. In the load reveal the roof cranes on last, after the walls sweep round and the windows snap in.
More Builder features
Keep reading the tour, or jump back to the Explore hub for all fifteen.
Draw wallsDraw house walls online for free.Open the feature →
Cut windows & doorsCut windows and doors into your walls with real CSG booleans — rectangle, circle and triangle openings,…Open the feature →
Materials & finishesApply any of 64 procedural PBR swatches — clinker brick, standing-seam metal, clay tiles, herringbone paving…Open the feature →
Open the designer — pick a gable, and the roof lands fitted to your walls.
No install, no plugin — a house builds itself the moment the page opens.