Has anyone built a south-facing roof on a building that’s 45 degrees off?
I have the opportunity to add an attached garage to my house, and I’d like to provide a plaftform for solar PV on the roof (Zone 5, NW Ohio). The existing structure (and the entire town) is oriented 45 degrees off; that is to say, the street runs northeast/southwest. I’d be attaching the garage on the side of the house that faces southeast.
I’ve attached here a couple sketches of an odd roof arrangement on top of a 24×24 footprint. Has anyone tried something like this before? That proposed south-facing slope doesn’t extend all the way from corner to corner; there’s a ridge which results in gables on the northwest and northeast walls. That’s 650 square feet of due south-facing roof. My other goal is to NOT use trusses, allowing a funny-shaped but creative space in the attic for my wife to use as a studio (that’s her and her desk).
This is the brainstorming stage, and I’m seeking feedback from a design and structural perspective. I know it’s completely odd looking–let’s get that out of the way first. But I’m the builder and the property owner, I’m game to try unusual things to maximize my solar dollar, and FWIW I am subject to no code oversight. Just curious if and how other people have handled this situation. Or is this much-ado about nothing; would the southwest slope of a simple 5/12 gabled roof be perfectly adequate for solar PV?