1:5:10:365 EcoTip Blog

November 15, 2008

:320 Can Lights & Ice Dams

Take the 1:5:10:365 challenge: Do one thing – for 5 to 10 minutes – 365 days a year to make our home and planet environment better.

1:5:10:320 EcoTip: Can lights in the attic can provide enough heat to melt snow on the roof and result in ice dams. To prevent this install ICAT rated can lights. ICAT stands for Insulation Contact, Air Tight. Not only will they help prevent heat from the can light from getting into the attic but will help same energy as well.

infiltration-2

Courtesy of MoistureView.com

The infrared thermal image above shows cold infiltration around this old uninsulated can light in a kitchen ceiling. ICAT can lights are permitted to have the insulation contacting them. The one in the thermal image wastes energy because code does not permit the insulation to come into contact with it due to the fire hazard. Where the cold comes in – the heat goes out which can lead to the ice daming condition.

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Suggested Review: :044

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