• All About Vapor Barriers
  A vapor barrier is an impervious membrane that prevents the flow of moisture through a building envelope. The main purpose is to block the passage of water vapor contained in the air. It is installed together with insulation.
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  Note: A vapor barrier is an impervious membrane that prevents the flow of moisture through a building envelope. The main purpose is to block the passage of water vapor contained in the air. It is installed together with insulation.

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