03-23-2012, 07:05 AM
Not really a "design" question, but using 1/2" rigid foamboard over 3/8" plywood with seams staggered so they are not in line with the plywood seams.
Can/should the seams between the foamboards be covered over like drywall seams? If not, isn't movement a issue and the resulting cracks?
Can/should the seams between the foamboards be covered over like drywall seams? If not, isn't movement a issue and the resulting cracks?