07-23-2016, 12:03 PM
quote:
Originally posted by Rob Tucker
Screw the roofing to the plywood. What do you need purlins for if you have plywood?
Guy I'm doing it for just wants an exposed rafter ceiling. He's mostly doing it so he doesn't have to look at the corrugated roofing, but seeing screws coming through the plywood would look even worse. Also, is screwing roofing to plywood considered strong enough?
My personal preference would be to just use 2x4 purlins and then cover the ceiling with some cheap paneling. One other consideration is noise. I've "heard" that plywood sheathing under metal is a lot quieter in rain.