New IC "air-lock" cans are prefered by far... IF the you can get to the
cans from above.

This is code for many US states now.

Richard Reid, LC

Tom The Great wrote:
On 5 Jan 2007 13:30:38 -0800, "cc" wrote:

Is there a retrofit kit to prevent all the heat and ac being leaked by
these lights? They are 6 years old and not the type that allow
insulation to be in contact. Thanks all.

imho:

I think NON-IC cans require air flow.

Might want to think about installing, newer cans, that are IC and have
an air tightness rating.

later,

tom @ www.FreelancingProjects.com