I have a near-100-year-old Craftsman Style home with little to no insulation. I would like to redo the bathroom and insulate at that time. Since the home has wood clapboard siding, do I need to leave an airspace on the inside of the stud spaces? I would rather fill the entire stud space with the most allowable insulation. Do I have to worry about condensation forming on the inside of the T&G sheathing that may lead to peeling exterior paint?
Thanks in advance,
Jim
Replies
Jim,
Once insulation is installed in a wall that was uninsulated for years, it is usual to notice that the paint on the siding doesn't last as long. The main reason is that the siding is colder than it used to be, and colder siding is damper than warm siding.
Don't worry about that fact too much, though. You still need to insulate. Fill the stud bays up; celluose insulation will perform better than fiberglass batts.
MHolladay, Since my posting, I have been doing some more research. Thanks for your recommendations. It seems like CCF (Closed Cell Foam) is what most folks are recommending. I have only a small area and think that I may try a DIY kit (http://www.guardianenergytech.com/benefits/FnB.php) I don't think that an insulation contractor will be interested in such a small job. I may endeavor to remove one interior wall at a time in my home and seal all of them with CCF.