My bedroom is in an A-frame with only 8" rafters. The slanted walls contains fiberglass insulation and is drywalled. The room gets cold. Can I simply apply 2x4s against the existing wall, put fiberglass or pink insulation board between the new studs and put drywall over it?
Should I remove the existing drywall?
What about vapor barrier?
Will this make a difference in keep the room warm?
Thanks,
Glenn