Recently had a den built. Contractor installed 6 recessed lights in the ceiling. This is before I knew anything about lighting. The county came to inspect, had the contractor remove some insulation around the lights. Well now I have a cold wind that comes down from the light fixtures. Its OK when the lights are on, but when the lights are off, you can feel the wind. Can these non IC lights be replaced with ones that can take insulation? Do we have to break the ceiling again?