Renovating kitchen: Interior rigid foam an option?
I’m renovating a kitchen and trying to present some insulation options to the homeowners. The walls are getting stripped from the inside down to the studs, but the exterior is not being altered.
I would like to use some rigid foamboard to crank up the R value and to provide airsealing, but I’m worried about not having a place to secure the cabinets. Someone suggested installing a layer of plywood under the drywall and screwing things to that.
How about this:
From the inside to the outside…
1/2″ drywall fastened to ply with 1″ drywall screws
1/2″ plywood fastened to studs with 3″ screws
1 1/2″ rigid foam [tape seams and foam penetrations]
4″ old school studs insulated with cellulose
7/8″ old school sheathing
Thanks in advance!
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