Kim writes from Lebanon, New Hampshire: "Help! I have a Cape style house built in 1950. I would like to insulate the attic spaces behind the kneewall, roof etc. Unfortunately, the upstairs heating pipe runs thru the bedrooms and then behind the kneewall. Do I have to insulate the outside wall treating this unused space as heated space or can I insulate the pipes with rubber tubing and then insulate the kneewalls and floor? I can send a picture if needed."

Answer: You just need to insulate the knee wall. Unfaced fiberglass insulation can come in contact with hot water pipes. You just need to work around them.