Recessed Lighting & Air-Sealing


Here’s a classic example of air-leakage around a recessed light fixture.    The dirty insulation in this photo is from air leaking out of the house and being filtered by the fibergalss insulation before it exits the house.  Dirty insulation around recessed can light(Fiberglass makes an effective filter in this case!)   In fact, insulation that’s dirty on the bottom is one of the clues we look for during a home energy audit.   Leaks like this represents a lot of heat loss in the winter, and depending on wind or duct leakage it can also mean higher cooling bills in the summer.  Fortunately, there are ways to effectively air-sealing around these fixtures.   Add to my to-do list:  we’ll put together a short video showing the problem and the fix.

You definitely want to address this before you add insulation!  Even taking advantage of the insulation tax credit only makes sense if you make sure you air-seal first.  

[Be sure to check out the video on recessed lighting which includes a discussion of airsealing.]


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3 Responses to “Recessed Lighting & Air-Sealing”

  1. Attic Insulation « GreenHomes America Says:

    […] Well, it’s never too early to tackle an attic insulation job.   Properly air-sealing (see recessed can light and open chase examples) and insulating your attice provides year round comfort and […]

  2. Recessed Lighting–Energy Issues « GreenHomes America Says:

    […] month, I mentioned air-sealing around recessed lights.  Well, we’ve put together a short video explaining how we find and fix leakage and touching […]

  3. Another example of energy problems around recessed lights « GreenHomes America Says:

    […] this fixture isn’t rated for insulation contact, the insulation has to be kept away.  Learn more about how to address this. Energy weak points around recessed light […]

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