Quote:
Originally Posted by wdfifteen
I've been studying interior wall and ceiling treatments. My head hurts. Steel = noisy, worst condensation problems, not structural, pricey. Corrugated PVC = less noisy, less condensation, not structural, cheaper. OSB = cheap, structural, ugly, flammable. Drywall = quieter, easier to get someone to install, cheapest.
Anyway I do it I'm going to have to insulate it. That's another whole can of worms. Did I mention my head hurts?
|
I haven't experienced any condensation issues with my steel ceiling. In the side with no ceiling insulation it is noisy. In the insulated side it's not "as bad" but with your building having a metal roof, you're going to find it difficult to silence it when it rains. If you drywall the ceiling you're going to have to install 2x4's to span the 4' OC trusses and put them at 2' OC just like the roof is done and then use 5/8 drywall.
For insulation, R30 MINIMUM in the attic. I'd have blown fiberglass installed as it doesn't settle. The thickness it's installed at is the thickness it stays at. For exterior walls I'd have the walls sprayed with foam. You can go full thickness with foam but that gets a bit spendy. I'd probably have a foam sealing layer sprayed in and then a minimum of R14 batting insulation with a vapor barrier and then wall sheathing (drywall or whatever you choose.) There's also the blown in cellulose for sidewalls that is sprayed in and then the wall board installed, it seals well but I'm just not a fan of spraying stuff in that has water. Get it sealed up and your heating cost will be minimal. If you really want a headache, start thinking about heating/cooling.