Re: Adding Attic insulation in Cape Style House
If you have the sloped ceilings and the knee walls this type of configuration does make it challenging for insulating.
live in Boston MA where the recommended R value in the attic is R-49.
How do I insulate the attic? Do I need to redo the second floor?
You can increase the amount of insulation to the "attic" portion from the flat area that exists under the peak as well behind the knee walls quite readily .... albeit you would need an access .... it's the sloped portion that's the weak link.
You might increase the insulation value to R 49 in the attic with blown in cellulose or fiberglass batts .....but the majority of the ceiling space .... which is the sloped sections ....... will only be maybe R10.
Without tearing out the ceilings you could apply sheets of rigid foam insulation across the surface of the ceilings and cover with drywall.
This is where closed cell spray foam definitely helps .... but you would likely need to remove the existing drywall to do that.
You might contact an insulation contractor for some ideas for your situation.
"" an ounce of perception -- a pound of obscure "