Menu path
Modify Roof > Split Gable
The Split Gable command attaches a gable roof to an existing gable end, creating a joined gable configuration.
How to create a Split Gable
Navigate to Modify Roof > Split Gable
When prompted, click to locate a ridge at the gable end where you want to attach the new gable
The Split Gable dialog box will appear with parameter settings
Configure the parameters as needed (see parameter details below)
Click OK to create the split gable
The new roof will be drawn and automatically merged with the existing roof.
🧾 Split Gable parameters
Field | Description |
Fixed side | Toggles between Left and Right (as viewed from outside looking at the gable). If you select Left, the left side of the new gable aligns with the left side of the existing gable, and conversely for Right. |
Side for the new ridge | Toggles between Left and Right (as viewed from outside looking in). If you select Left, the ridge of the new gable will be positioned to the left of the existing ridge, and conversely for Right. |
Ridge offset | The distance the new ridge will be offset from the existing ridge. |
Depth | The depth (length) of the new gable roof section. |
Tuck under | The depth that the opposite side of the new gable will project under the main roof. |
💡 Quick tip: Calculating ridge offset
The software requires the ridge offset value to construct the Split Gable, and this dimension is rarely provided on plans. However, it can be easily calculated using the roof geometry and the desired gable configuration.
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