In addition they have gasketed edges to seal them to the drywall.
Insulation around recessed lights.
If i replace those bulbs with leds will that reduce the heat enough so i can insulate around the existing lighting cans.
Construct a circular dam to place around each can with wire mesh or sheet metal if the lights are not ic rated.
Make your next attic insulation project that much easier by adding a smartcap attic recessed light cover to your list of hard working insulation accessories.
The best solution is to avoid putting any recessed lights in cathedral ceilings.
These fixtures are sealed to stop airflow.
Insulation should be kept away from recessed can lights because the insulation does not allow the heat generated by the lights to dissipate.
The recessed lights in my house are accessible from the attic but there s no insulation around them because it says on the fixtures that they need to vent the heat generated by incandescent bulbs.
However if you want them use type ic airtight fixtures available at lighting stores and home centers.
They can trap heat and increase the danger of fire.
Smartcap attic recessed light cover is a pre assembled easy to install fire rated recessed light cover that simply unfolds into a perfect cap over non ic rated attic light fixtures requiring a 3 gap between fixture and insulation.
Replacement can be challenging.
When heat builds up in a recessed can light it can.
The dam should provide a minimum 3 inch space around the perimeter of the can.
If you see the letters.
Since you mentioned your cans have holes in them they are most definitely not ic rated.