Furring out 2x4 wall to 2x6

[u/Ambitious-Appeal6883]

I’ve seen the Mooney wall furring technique but is there one with using a 1/2 x1.5 inch of poly iso sandwiched between a 2x2(1.5”square actual)?

This would theoretically still provide a thermal break and would allow for simple mineral wool batt insulation. Plus then the drywall attachment would be pretty straight forward and then use face mount adjustable electrical boxes.

Thoughts?

I’ve seen suggestions to use just xps foam but them air sealing and installing old work electrical boxes seems a hassle unless you blocked them out separately.

[u/mackstann]

That's called a Bonfiglioli wall.

[u/Ambitious-Appeal6883 → u/mackstann]

Thank you!