Just did a job replacing flourescent lights in a kitchen with can (recessed) lights.
These are IC-rated housings (Junos). Because of the layout, two of the housings were installed snug against a joist. Also I used the Arlington black plastic button Romex clamps rather than metal clamps.
I figured that if the cans are safe to bury in insulation, it doesn't matter if they're up against a joist. What do you think?
Also, a guy at my supply house made the comment that the thermal cutoffs for cans are unnecessary now because of a change in the way insulation is made (the guy claimed that insulation used to have a trace of oil in it). He said that he's known electricians who bypassed the thermal cutoff if the fixture was routinely cutting off...
The whole line seemed like bull to me. Anyone who'd bypass a thermal cutoff seems to be putting the residents at risk from fire. Any comments?