Originally Posted by Pak713
So I did end using the de icing cable. It worked fine. Although I wasn't able to correctly install the cable due to the amount of ice. So as soon as the ice is gone I will be installing it correctly. We are having a warm spell currently so the ice is almost completely gone. So I have a few more questions and I was hoping someone could help me out. So as I currently mentioned my house is a 1.5 story house. The bedrooms up stairs have knee walls. Above the bedrooms there is a small attic space as well. So I have been working on sealing up the gaps between the knee walls and the floor joists. I was able to completely do one side of the walls. When I originally started the knee wall attic space that I can access from the other main attic was noticeably warmer. After sealing all the gaps between the floor joists it seem to be the same temperature as the other attic. The other knee wall attic I can't access. I plan on cutting access doors in the upsatairs bedrooms to access the attic space and seal up all the gaps. The problem I'm still wondering about is my knee walls are insulated from the beginning of the wall straight up the rafters and up to the small attic space above the bedrooms. I have soffit vents and box style roof or ridge vents. The small attic space above the bedrooms are noticeably warmer than the rest of the attic space. Maybe because it's so small? Will the insulation that is running up the sloped part of the ceiling hinder air flow? Most of the pictures or diagrams I've found on the internet show just the knee wall and the flat part of ceiling being insulated, not the sloped part of the ceiling. I kinda of feel like maybe the air flow isn't flowing like it should. Also why is the attic above the bedrooms so warm?? Sorry for the long post, but I really don't have anyone to ask about this. Hopefully I've explained everything well.
solid blocking between the joists below the knee wall should be there to isolate the attic space behind the knee wall, then you want the insulation on that attic floor and the knee wall and up the slope but you do need air space above the sloped section insulation.
In new houses, the rafters are made out of 2 x 10s to allow for air and insulation.
The real fix you need is to make the rafters deeper.
If you can dig some of the insulation from the sloped area to make air flow you might just add more insulation to the lower side of the slope and more drywall.