To resize the extrusion in the 3d view select it and use grips to edit it.
Revit 2018 trim extruded roof.
You can join roofs to other roofs or walls or unjoin them if they were previously joined.
For examples of basic roof shapes and a link to a sample revit model containing these examples see the roof sample file topic.
This video is part of a series that walks you through the process to model a house.
As an extrusion.
In the roof reference level and offset dialog select a value for level.
Click modify create extrusion tab mode panel finish edit mode.
In this video we will go through adding a roof by extrusion to our house.
You cannot join a roof to more than one top face of another roof.
To view the extrusion open a 3d view.
Revit completes the extrusion and returns you to the view in which you started the extrusion.
The highest level in the project is selected by default.
Creates a roof by extruding a profile that you sketch.
In this example side faces of walls and joined faces of the roof were selected.
Specify the work plane.
From a building footprint.
Choose the method that best meets the needs of your design.
Valid boundaries are a joined roof or its bottom face a side face of a wall a bottom face of a floor an edge of the roof to be cut or a model line on the face of the roof to be cut.
Note that you do not need to trim the sketch lines to have a valid boundary.
The bad thing about extruded roofs is the fact you can t follow along with the footprint of your building the good thing is we can do something about that the objective of this video is to go to the plan view we will then create a void where our walls jag in and out this is going to allow revit to cut the roof properly in plan to get started jump into your revit roofs.
Click architecture tab build panel roof drop down roof by extrusion.
Revit offers several methods of creating roofs.
From a mass instance.
You can join a roof to the top face of another roof and the wall below that roof if you select the wall as the target.
With sloped glazing.
This is a general.
You can use model in place when you want to cut system families like roofs or walls.