Uploaded January 2021 | Updated September 2026, 10 minutes ago

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A Vapour or Vapor Retarder must be on the warm side of the home. I live in a cold climate and the heat is on inside of the house the majority of the time so we need a vapour retarder between the insulation and drywall. Some insulation comes with a paper vapour retarder attached to it, so you don't need the poly. Check your local building codes to to know where to install it in your home!

Always wear your personal protective equipment and work safely!

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