Do You Need A Vapour Barrier In Attic. To install an efficient vapor barrier you need the dimensions of the room. If you are planning to have an attic insulation project for your home you may be wondering whether it is important to have a vapor barrier installed as well. A radiant barrier must have an emissivity of 0 1 or less to be effective.
Since you already have insulation if there was a moisture problem you probably would have noticed signs of it already. A vapor retarder is a material used to prevent water vapor from diffusing into the wall ceiling or floor.
Since you already have insulation if there was a moisture problem you probably would have noticed signs of it already.
To be able to answer this question correctly for your home there are a few factors you need to consider before any major attic insulation project. A vapor retarder is a material used to prevent water vapor from diffusing into the wall ceiling or floor. Measure the entire area and write down the results. If you read the brief it points out the major concern with moisture in insulation is air leakage.
