A vapor barrier is a material used to prevent moisture from passing through walls, ceilings, or floors of a building. It is typically installed on the warm side of the insulation in walls, ceilings, and floors to prevent moisture from condensing within the building envelope. The vapor barrier is used in building construction to prevent structural rot and mold formation. It is commonly used in areas with high humidity, such as bathrooms, kitchens, and basements. It is also used in cold climates where the interior of the building is kept warm. The vapor barrier is essential to maintain the structural integrity of the building and to provide a healthy living environment by minimizing the risk of mold and mildew growth.
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