Your energy bills depend on having a complete thermal envelope. This home owner added insulation to the attic stair which is a good thing. However, there are still problems. The type of insulation used behind the stair only works when it is not compressed and if it creates an air tight seal. Since it is smashed to fit behind the stairs it is not performing as intended and without other measures it is not air tight. There is no air sealing around the stair opening to prevent air leaks into the attic such as weather-stripping. The access itself does not fit tight to the opening when closed adding to the leak. All of these problems hurt the energy efficiency of your home and it impacts your indoor air quality. Make sure all the gaps and cracks in your thermal envelope are tight, complete, and well insulated for the best performance possible.
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