To create a dormer model required walls and additional roof.
Roof by extrusion revit.
9 join roofs add opening to create dormer.
The highest level in the project is selected by default.
Use join unjoin roof tool.
They are ideal for roof shapes that are freeform barrel vaults or similar.
Within revit the roof by extrusuion tool is used in an elevatation or section view as opposed to the roof by footprint tool which is used in a plan view.
Extrusion roofs offer an alternative way to create roof elements.
Specify the work plane.
Elevation of section you can select a reference plane to sketch your profile on as long as you have a named one in your model.
This tool is located in the modify tab.
In the roof reference level and offset dialog select a value for level.
Display an elevation 3d or section view.
Use it to extend the dormer roof to the main roof.
Click architecture tabbuild panelroof drop down roof by extrusion.
Then follow these 2 steps.
How to create a roof by extruding a profile.
So first of all let s go ahead and create our reference plan.
The roof by extrusion tool is used to create wave form type roofs you create a sketch of the upper profile of your roof in a side view i e.
The roof by extrusion tool creates a roof by extruding a profile that you sketch.
We also need to use a refrence plane upopn which we can sketch the side profile for our extrusion.
You sketch them in elevation and then apply extrusion lengths to them.