I would like to turn a unfinished section of attic into a heated/cooled storage area, with sheetrock, trim, carpet, etc.
My problem is the area that I want to convert has 2x6s for roof trusses (edit - they are rafters, not trusses) . So I can either use R19 insulation in the ceiling, which I rather not do. Or lay 2x4s to the side of the 2x6s and attach both with metal straps or 3/8" plywood on the sides. This method will give me 9" of insulation spacing, so I could use R30C insulation.
Do you see a problem with extending the depth of the 2x6 roof rafters this way? There will be sheetrock attach to the roof rafters. Also, this is in NC, we rarely get snow, but with global warming
I could see a foot of snow accumulating on the roof.
Here is a rough side cutaway sketch of what I am thinking about .....