The workaround would obviously be lower wattage bulbs and full insulation. The proper fix is TC rated cans to prevent a fire hazard if too large a bulb is inadvertently installed.
The flood lamps are in this case a specific preference - or indulgence. They are rarely used. I swapped out the two 150W floods in the shop a few weeks ago, one CFL and one LED. I'm going back to floods until my stock runs out.
The drywall around the can (light off) in my office is the same temperature as the rest of the ceiling with a 20F temp difference between inside and outside. At dT=40F last week the difference was still negligible with no motion in the convection indicators (cobwebs in the can).
If I lived up north where dT=50 is normal I probably would rethink this fix. Here in Georgia it's all about infiltration, and palmetto bugs that crawl through holes in the attic.
The weather is supposed to drop back into the 20's this week. If time permits I will do some heat loss evaluation and report back.
Doug
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