Originally Posted by king of my castle
Because the rigid insulation board from owen corning insulpink provides a channel 1" deep for strapping/furring but at every 24".
I"m lost, as to why you can only go 1/2"? this wont work in any way! #1- the thickness of the rigid board will determine the amount of wall thickness. #2- if the channel is 1" deep? and you only fill it with 1/2"? there is a 1/2" void, will make for a very wavy wall. something has to bend that 1/2" most likely the weakest point! the drywall paper, if you use any type of one direction grained furring strips? they'll likely split if you screw them? pulling the strips in that 1/2". = constant pressure on screw heads. as soon as they're properly sunk, will pop through the paper. if you try to nail? in center between studs? will be springy, each time you hit the nail, the gypsum inside will crack, each crack will separate the paper from gypsum. when you try to get nail dimpled for mudding, last hit will pull nail through the paper.
you're looking at every nail/screw popping soon, where not driven into the studs that are already there!
in my opinion, a lot of work putting up furring strips= absolutely no gain? only a lot of future problems.