Problems with knee wall insulation that was partially insulated
Channel: Nate the House Whisperer
Date: 09/04/2013

Knee walls are very challenging things to insulate well. There are large gaps in the air barrier over the fiberglass insulation in the knee wall. Worse yet, there is a double stud assembly here, and so there is a 3" gap with no insulation behind it behind the insulation you can see. When insulation isn't in contact with the 'thermal boundary', which is the wall in this case, it does not perform at all. It's like someone holding your coat 4" off your body and not touching you anywhere. It just doesn't work.