recessed lights- air tite connection...

Newbite to diy network so I hope im in the right forum and this applies here not exactly electrical but close....

Going to install recessed lights but have been told that they need to be air tite or they are not energy effecient, air can leak through them and can potentially lead to some mold problems if installed in wet area etc..

However the cans I have purchased at local HD with the trim I like did not come air tite.. I Have read you can by some product which will make these cans pretty much Air Tite but I have no idea where to get this product or know much about it...

Any info on where to find these or about this product appreciated...

 

Do not modify the can of the fixture. It is tested in the current fashion to insure it will not overheat and catch fire.
Try to return the fixtures and purchase insulation contact fixtures. They are essentially air tight.
Some folks have made boxes in the attic to keep the insulation from touching the non-IC fixtures, but I think it reduces the fixture's ability to get rid of its heat, and makes it not a good idea.

 

I actually do have IC Fixtures ,,,, I didnt realize they were also air Tite basically thanks for the info

 

Just look for the cans at HD they make them air tite for a couple dollars more make sure they have a sticker that says AIR TITE. not all IC cans are air tite. And realize they are not really air tight...thats why they say air "tite"