Is there anyway to create a custom shaped roof (Barrel Vault Roof, in this case) that can include specific roof type componants (sheathing, insulation, finishes, that can interact wall with wall components the way flat roofs can, ie. gyp board stop at the interior wall finish and upper roofing, sheathing and structure extend beyond the exterior finish as well as material values (U- factors) being assigned to components or manually assigned for energy modeling? Let's not forget having walls extend to it. (Might as well ask for it all) ? I can do the geometry, just can figure out how it can be a roof object?