How to apply rafter cut to roof?

[espen_faeravaag_da_silva]

I have made a simple roof by extrusion as shown, and the ends need to be cut off using the reference planes already in place that I used previously to cut the structural framing beams with the simple "cut geometry" tool (clicked on beam, clicked on reference plane, voilá!) but when I tried to do the same roof, I can't select the reference plane as the "second-click" of the cut operation. 

The roofs' "Rafter cut" is set to "Plumb Cut" which is doing half the job already, and I could just edit the extrusion reference line to end at the reference plane to get at least the vertical cuts right, but I would still need to get the roof to end at the horizontal reference plane in order for the roof to end in a "point"

I know that beam family types need to have a "void extrusion" in order to be applicable for cut operations in the project, but do roofs as well? I'm using Revit's  "Roof by Extrusion" and applied a "System Family: Basic Roof" structure to it

Am I using the right roof tool, or is there some setting I need to enable? Thanks!

[ The subject line of this post has been edited for clarity by @handjonathan Original: How to cut a roof wi]

[Simon_Weel]

Select the roof. Look at the Properties panel:

Set Rafter Cut to Two Cut - Plumb and then fiddle with Fascia Depth to get the result you like.

[handjonathan]

Hi @espen_faeravaag_da_silva 

Thanks a lot for posting your question to the forums!   Has the solution suggested by @Simon_Weel helped with your issue?
 
We look forward to hearing back from you with more information so we can help you as a community! 

[espen_faeravaag_da_silva]

Hi! Thank you for the suggestion. I have had to uncheck your reply as the correct solution because an unexpected problem showed up:

the left rafter is being horizontally cut slightly above the plane of the other rafter horizontal cut, presumably because "fascia depth" is measured paralell to the roof, in this case with two different angles resulting in two different apparent heights. 
I have tried to make two separate roofs instead for each of the sides and separate fascia depths, which solves that issue, but now I have problems joining the roofs at the top given that they have different angles...

Any suggestions on how I can fix this? Thanks!

[SteveKStafford]

You can make the roof by footprint and use slope arrows to offset the ridge. Then you'll be able to get the rafter cut options to work.

[ToanDN]

Cut the roof vertically using Vertical Cut Opening tool.  Cut the roof horizontally by joining it to the wall below and switch join order.

[espen_faeravaag_da_silva · Accepted solution]

Thanks everyone for the suggestions. The final solution that worked for me was to make two roofs by extrusion but not meeting them at the top, but instead somewhere along one of the slopes:

this way they can have two separate fascia depths, and I can join them nicely somewhere I know there aren't going to be complicated  cuts/windows on the roof

[azad.Nanva]

but this is not good solution , if you change the angle of roof that is spent too much time to fix it, if you have a sector or big project! ,it is terrible .
the best answer is for @ToanDN .

[espen_faeravaag_da_silva]

Unfortunately @ToanDN 's solution didn't work because the wall under the roof is being cut by a dozen planks that make up the structure of the house. After I joined the roof and the wall together, the portion of the roof that sticks into the wall would not be cut by the planks, and I had to manually cut it a dozen times, which wasn't gonna happen...

What's terrible is that I can't just cut the roof with reference planes like I wanted to! I have to resort to weird solutions like these.