In the option bar make sure defines slope is activated for boundary lines.
Revit roof secrets.
But i m not really sure if this is a best practice.
This is the easiest way to do it.
2 activate slope to create a sloped roof want to create a sloped roof.
Then choose attach top base 2 and finally select the roof 3.
To turn a sloped roof into a flat roof select all roof boundaries purple lines and uncheck defines slope in the option bar.
Discover free revit bim objects for roofs.
We can use the same attach top base tool to tidy up this junction.
Using shape editing tools.
Please like this video.
Download manufacturer approved bim content for roofs.
See hd version of video tutorial here.
You need to create the bay window roof separately.
I believe this tools are not design for this purpose.
Once again select the wall first 1.