Sunday, September 16, 2012
The bubble insulation is rated to R-11. Considering that most 2x4 walls are filled with R-13, I feel R-11 is a great value for such a thin layer of insulation. We do still plan to put standard insulation in-between the roof trusses. The standard insulation will be rated R-30. This will bring our combined roof insulation to R-41 plus the radiant barrier that reflects heat. All together it should be a well insulated roof, keeping out heat in the Summer and keeping in heat in the Winter.