Wall profile; outside plywood necessary?
Posted: Sun Oct 18, 2020 9:41 am
Hi all,
I'm new to this forum and excited to be here! As I'm drawing up plans for my first teardrop, I keep running into a question: why do people put 1/8" (or thicker) ply on the outside of their structural wall only to cover in aluminum sheet? My plan is to use 3/4" ply for structure (with cutouts for insulation), 1/8" ply on the inside (sanded and painted to save $$$ vs. expensive plywood). But then on the outside, is there a reason not to put the aluminum sheet directly onto the 3/4" ply+insulation? Is it to keep the insulation in place for a floating skin?
Dan
I'm new to this forum and excited to be here! As I'm drawing up plans for my first teardrop, I keep running into a question: why do people put 1/8" (or thicker) ply on the outside of their structural wall only to cover in aluminum sheet? My plan is to use 3/4" ply for structure (with cutouts for insulation), 1/8" ply on the inside (sanded and painted to save $$$ vs. expensive plywood). But then on the outside, is there a reason not to put the aluminum sheet directly onto the 3/4" ply+insulation? Is it to keep the insulation in place for a floating skin?
Dan