Looking at leaky can lights.

Leaky recessed-can lights were big energy wasters before they were sealed.

Views: 309

Comment

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

Comment by Adam Zielinski on March 24, 2011 at 12:01pm

Sealing up a can light with a foam board box is a code violation and unsafe.  If you do it, you need to use a non combustible material, like drywall, or one of the tenmat mineral wood recessed light covers.  http://www.tenmat-us.com/

 

The Cree LR6 LED conversion kits are nice, and should cut down on air leakage.  However if you install them in a non-IC rated can light housing, you still are not supposed to put insulation over the top of them.  So you would still have to baffle around the can in the attic.   The best option for Non-IC can lights is to remove them and replace them with IC rated fixtures, or some other alternative lighting. 

 

Comment by Jim Gunshinan on January 24, 2011 at 2:42pm

Haven't heard of that Bob, thanks for the heads up!

 

Comment by Bob Small on January 20, 2011 at 3:04pm
Have you seen the Cree LR6 LED conversion? www.creeLLS.com Lets you switch to an LED bulb in a sealed unit that screws in to your existing can housing. Great price too.
Comment by Jim Gunshinan on December 20, 2010 at 10:55am

Sorry, that was five years ago when Larry wrote his article.

Comment by Jim Gunshinan on December 20, 2010 at 10:54am

Larry Armanda, who used to call himself the "Can Man" because he spent a lot of time looking at and fixing recessed can light leaks, wrote about it for Home Energy in 2005 "Further Wrestling with Recessed-Can Lights" (Sept/Oct). He didn't find a great retrofit kit, but Builders Best and Lithonia Lighting put out some good kits for sealing the can lights. That was ten years ago, so things may have changed.

 

At our house the contractors used a non-expanding spray foam to seal the lights where the fixture meets the ceiling. (The retrofit kits have a spongy gasket that does the same thing.) Then our contractor made boxes out of foam board to insulate the can-lights on the attic side. There was one problem—the can lights with incandescent lights stay on for about two hours and then the thermal cut off switch turns them off. The insulation makes the light fixture heat up rapidly inside. Without a thermal cutoff switch, the fire danger would be pretty serious. We put CFLs in the can-lights and fixed that problem. We need a brighter light in one room, over a desk, and still have an incandescent there. It cuts off after a few hours and I take it as a signal to get away from my desk for a while! They should be CFLs that give that kind of light but we haven't found it yet.

 

Hope this helps!

Comment by dale conner on December 20, 2010 at 7:36am

Do you know of a good kit for converting the leaky lights to sealed ones? I pulled my leaky lights out of my house and replaced them with sealed lights but only because I was able to access them via the attic space.

Featured Forum Discussions

Lighting replacement - 300 watt LED flood light

Started by Mary Sinkler in General Forum. Last reply by Dennis Heidner 16 hours ago. 2 Replies

Glass Block Windows

Started by Ken Kalke in Best Practices. Last reply by Sean Lintow Sr on Saturday. 1 Reply

What's the Most Profitable HVAC Job for Your Company?

Started by Wayne Melancon in HVAC. Last reply by Ken Kalke on Friday. 1 Reply

EZ Green Home is Hiring!

Started by Chloe Chapman in General Forum Jan 5. 0 Replies

Videos

  • Add Videos
  • View All

Latest Activity

Chris Laumer-Giddens's blog post was featured

Rock Wool Insulation for Floor of High Performance Tiny House

ROCK WOOL INSULATION FOR FLOOR OF HIGH PERFORMANCE TINY HOUSEIn August of 2016, we posted a video…See More
2 hours ago
Horace Douglas Hunt, Jr. joined Tom White's group
Thumbnail

Weatherization

Share your concerns and successes as a weatherization professional, or information for this…See More
5 hours ago
Horace Douglas Hunt, Jr. joined Sean Lintow Sr's group
Thumbnail

Best Practices (Residential)

Best Building, Retrofitting, or even Auditing Practices - what are they, what should change, what…See More
5 hours ago
Horace Douglas Hunt, Jr. joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
5 hours ago
Dennis Heidner replied to Mary Sinkler's discussion Lighting replacement - 300 watt LED flood light
"Have you looked how much light you need in the backyard and where you need the light?  Often a…"
16 hours ago
Nate Adams liked tedkidd's discussion Home Performance is Failing - let's turn that around?
21 hours ago
Nate Adams replied to tedkidd's discussion Home Performance is Failing - let's turn that around?
"Ira, you're not alone. Here in Cleveland the gas company uses their own auditors, it killed…"
21 hours ago
Nate Adams replied to tedkidd's discussion Home Performance is Failing - let's turn that around?
"Website is finally up, albeit still imperfect. You can check out the very detailed case studies.…"
21 hours ago

Home Energy Pros

Welcome to Home Energy Pros – the unique digital community by and for those who work in the home energy performance arena.

Home Energy Pros was founded by the developers of Home Energy Saver Pro (supported by the U.S. Department of Energy) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network. Please honor our Guidelines

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service