When heat builds up in a recessed can light it can.
Can you blow insulation over recessed lights.
If you don t see the ic designation however you must keep the.
The heat that recessed lights produce can affect temperature in the attic and in the room in which they shine.
Since you mentioned your cans have holes in them they are most definitely not ic rated.
Insulation should be kept away from recessed can lights because the insulation does not allow the heat generated by the lights to dissipate.
You could hire an electrician to replace each fixture with a sealed one rated for insulation contact ic.
Your best bet is to replace the lights before proceeding with blow in insulation.
If you see them printed on a recessed fixture the fixture presents no fire danger even if you completely cover it with insulation.
Over time debris from leaves and other sources can build up on top of the light so it would be reassuring to know that product has already passed.
You can minimize this heat.
Choosing an ic f rated downlight is added insurance that if during the course of its life insulation is accidentally dislodged and falls on the light no abnormal operation should be expected.
But here s another solution which you can do yourself.
Even an ic rated light could have a series of holes inside the housing which is letting air escape into the attic.
Go to a home center and buy a fire rated recessed light cover like the ones made by tenmat for every fixture.
The next thing to check is if the lights are airtight or not.