by QueticoBill » Fri Sep 22, 2017 12:47 pm
I have used plastic laminate on foam for acoustical panels and it works fine except for dimensional stability. I believe across a sheet - there is a grain to it if you look at the rear face - it can vary 1/4" in 48", from 10% to 90% rh, or in that ballpark. What the panel fabricators found was that the aluminum edges had to be joined with rivets and slotted holes to allow for it to change size or else it would bubble as the frame restrained it.