Sorry, I don't really understand the threads and I clicked Quote, not sure what it does !! So happyh you have created the answer, I have been weeks on it.
The origional roof is gables.
I am trying so hard to do what you have done but I get a hole in the side of the house. or a huge triangular roof if I close the gap.
Is there any chance you can upload the file you have edited ?
Thanks in advance