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Light Switches Can Be Big Sources of Leaks

Posted in: video

Here's an interesting video from our friends at Energy Vanguard that shows how much air can leak through simple things like light switches. This is an example of what happens around plumbing entries as well.  The idea way to address problems like this is at the source.  From the attic, crawl space or garage you should seal in a air tight manner all electric or plumbing penetrations. The foam gaskets many people attempt to use are not effective at stopping the air leakage around the outlets. If you decide to use foam spray to seal air leakage do not cut or trim it with a knife or you will be cutting away it's ability to stop air movement.

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