"A" frame 1st floor

[Old_Timer]

Thanks guys!
I lowered the 1st floor walls to effectively nil height then put 2 roof planes in and this was why I thought I'd have to custom build something for the "A" wall.
I'll redo the 1st floor and then without lowering any walls I'll just manually place the 2 roof planes , then the "A" walls should auto form.

Cheers