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Old 05-19-2017, 04:03 PM   #1
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Energy saving recessed lights covers


Hi, if we install 9 Tenmat Recessed Light Cover and air seal them how much would the attic light covers cut thermal losses of a ceiling? the home was built back in the 1970s we have fiberglass is blown in insulation but only about 7" to 9" depth,

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Old 05-19-2017, 05:34 PM   #2
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Re: Energy saving recessed lights covers


Older recessed lights are often not rated for contact with the insulation (3" clearance) and not air sealed. Covering them with something like a "Tenmat Recessed Light Cover" would certainly be an improvement however they were never tested or certified (UL) in that configuration. But, with common sense many people do use these covers and fortunately we now have high efficiency lights that provide the light we want with much less heat.

To put a number on it would be only a wild guess. There is thermal conduction loss along with air leakage and we just don't have test examples on every application. But, my wild guess would certainly say, well worth the effort and investment. And while you are up there dig out some of the other leaks before you bury everything in an r-60 layer of total insulation.
https://www.energystar.gov/ia/partne...ide_062507.pdf

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Old 05-20-2017, 08:19 PM   #3
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Re: Energy saving recessed lights covers


you have to be careful because the fixture is rated for a certain wattage and may overheat if you seal and cover it.

it may make sense to get fixtures specifically designed for use with insulated boxes. a vapour barrier goes over the whole box.

you can put led, but leds don't like totally enclosed, sealed fixtures. the heat kills the power supply.

really, pot lights don't belong in exposed ceilings at all. not much you can do about that though. even when done right they reduce the effective r-value of the ceiling.
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Old 05-21-2017, 06:18 PM   #4
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Re: Energy saving recessed lights covers


thanks everyone for the help
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air leaks , can light , energy conservation , energy saving , insulating


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