Recommended test
Generate the same footprint with two roof systems and compare space, supports and downstream tool compatibility.
- Create a gable roof at a moderate angle with collar-tie framing and a short overhang.
- Inspect the ridge, rafters and tie members from Front and Iso views.
- Save the project, switch to ridge-beam or standard truss framing, and regenerate.
- Compare interior clearance and confirm whether your intended dormer or opening workflow supports the chosen system.
Gable or skillion
Gable roofs expose the broadest Autostrek toolset. Skillion creates a single roof slope and currently does not support Dormer Framer. Choose the roof type before investing in dependent detail.
Hip roof V1
The Hip roof option creates four equal-pitch slopes with level eaves. A rectangular footprint has a ridge along its longer side; a square footprint has a central apex. It uses common and jack rafters, four diagonal hip rafters and a ridge board where a ridge exists. Set rafter width, depth and building spacing in Build. This system has its own framing choices and does not use saved trusses, collar-tie or ridge-beam presets.
Hip roof V1 was released on 13 September 2026. See the Hip roof guide for supported dimensions, generation steps, roof layers and live adjustments.
Gable framing options
Collar-tie framing is a straightforward rafter system suited to smaller structures. Ridge-beam framing preserves more open headroom and is a useful host for current dormer workflows. Truss framing uses either a standard system or a saved Truss Builder definition.
Angle and overhang
The current generator accepts roof angles up to 65 degrees and overhangs up to 600 mm. Steep values trigger warnings because they create demanding geometry and real construction implications. Always inspect eaves, ridge height and member intersections after a large change.
Compatibility comes first
Saved trusses are for gable roofs; skillion uses its standard truss behavior. Dormer roof openings support conventional rafters and the scoped A-frame path described in gable extensions and A-frame dormer floors. Other truss configurations retain their existing limits. Autostrek does not size structural members: verify spans, loads, bracing and connections independently.
Hip roof V1 requires a positive pitch and a uniform overhang on all four sides. Dormers and Hip-specific assembly-guide generation are outside its scope.