I had very expensive energy bills last year, so I'm been trying to seal-insulate my house this year. One problem I encounter is unencapsulated knee walls. I thought about covering these knee walls, but there are lots of obstacles. First some of them are in tight spots and are hard to reach. Then there are others that have wires running across studs. A water heater also blocks access to a section. The loose-fill insulation also makes it hard to work on these walls. I can still try my best to cover as much as I can, but it's going to be a lot of work. These knee walls are covered by batt insulation though.
There is also a wall cavity with three sides of it being exterior walls, and one side of it not covered by any sheathing. The cavity is in a tight spot and hard to get down to do any work.
My question is: are these big enough problem that worth the effort to correct them? As far as air leak is concerned, I think I can still work on the inside and seal the interior wall as much as I can. But then there is also convection loss. Will this be a big issue? As I mentioned, there are insulation on these walls. Can it at least prevent convection to some degree?
Last edited by deerhunter; 11-02-2010 at 10:44 PM.