Inside the Kitchen We are looking at the inside Kitchen wall here. This is the section I'm working on as we speak. This is how I am dealing with building and trying to keep warm. On a day I am going to work I take and roll the plastic up and hook it to the ceiling. Once I complete my days work, I drop the plastic down to help hold in the heat that night. There is some tar paper as well on the wall but I just peal that as I go. The pvc air tubes embedded into the wall are more air vents. They are lower on the northside, higher on the south side of the house.