We just removed a dropped ceiling in our kitchen and put four 6" recessed lights in the ceiling. There appears to be a slight area around the base of the lights that's not sealed tight. We were wondering if there is something acceptable to seal around these light in the attic to prevent AC leakage? Foil ducting tape? Just put insulation around them? Spray foam sealant (we're hessitant on this as it states it's still combustable after cured)?
And should we leave the domes in the attic free of insulation so the heat from the lights doesn't tranfer into any insulation that might be over the light fixtures?
Thanks!