Yet Another Roof Challenge

[tomnewsom]

Oh we do so enjoy these don't we? :)

See the attached image for a mass shape that I'm trying to turn into a roof (note that building it out of several pieces makes for ugly joins in several places) - For scale, the two taller parts are approx 18.5m by 9.5m by 9.5m high and the central part is approx 14m long, set back 700mm from the taller parts.

I can create the right roof with 'roof by face' however -
It works ok if the roof thickness is set low (around 100mm)
But not if it gets much thicker (unable to create roof) - I need around 650mm of thickness.
I want the bottom of the roof to be horizontal, not vertical. ie

like this:
\_\
not like this:
\
\|

Anybody got a better idea? Got to have tidy joins everywhere, as there are important junctions all over the place.

[bowlingbrad]

Here is your roof using the roof tool. Reverse engineer it to see how it was done.

Brad

[tomnewsom]

Yes, that's how I'm doing it so far. But how can I avoid this (see attachment)
(what I want to happen marked in red)
The roof is going to effectively be a monolithic construction, so needs to bend round corners in section as well as plan. This is why I was trying to do it Roof by Face, so that all the pieces joined together nicely - which it does, for a thin roof. But mine is around 2-3 times as thick as that one you did.

Thanks for helping though!