I want to install recessed lights in a finished family room. Above the roo is the subfloor of my upstears bed room. The ceiling joists are 2x8. I measured the 6 inch recessed can and it is 7 1/2 inches. Not too much wiggle room at the top of the can and the ceiling. IS there a minimum that need between the can and the ceiling?
As long as they do not touch they are OK. An inch would be nice.
If they are real close you can use IC rated cans. They typically have a heat shield above the lamp base.
Whatever you do DO NOT use Emerald brand recessed cans.
Sometimes I feel like if I answer any more questions it is like someone trying to climb over a fence to jump off a bridge and me giving them a boost.
Answers based on the 2008 & 2011 NEC.