What type of insulation do you have?

Shouldn't your builder/electrician be researching this?

I used the type that fit in a standard 4" ceiling box. I think they were Halo brand fixtures.

Look for versions IC- rated.

This appears to be the kind of LED wafer fixture that requires a 3.5" or 4" hole with a power supply and driver in a loose box above the ceiling. I believe they are all rated for insulation contact (IC).

I prefer the ones with a high R9 (red) rating for better LED color rendering. (look for the California Title 24 label)

They should also be air sealed (gasketed) if in a roof-ceiling assembly.

If this is not the fixture you should show us what you are using.

Here is a tool that is used to drill the hole and catch the debris.

Using a 6”DALS 5006-CC or 6” WAC LOTOS.

Thank you!

The whole point of the wafer fixtures is ease of retrofit. Drill & duck! Installing our first in a week or so, retrofit. For us, we are putting a few where a joist is already, without modifying the joist. LEDs are cool to the touch.

The lights are IC rated and airtight - we have around 35-40 of them on the project. I really don't like the look of surface mounted disc lights and the canless wafer are touted because of their ease of installation, making them less expensive as compared to typical recessed lights with a can/housing. The electrician added the step of installing plastic cover boxes so insulation didn't fall on them when they cut the holes in. I thought there must be a way to eliminate this extra step since they had estimated its cost as $950 for the covers. I was looking for another method and it looks like the tool that RES2 mentioned below would have done the trick. Just wanted to know more about solutions for future client projects. Thank you to everyone for their comments - you've all been very helpful!

You never said what type of insulation.

The only insulation I can think of that might fall through a 6" diameter hole is loose cellulose or fiberglass previously blown into the floor of an attic above.

Sorry I forgot to say the Insulation is Blown In Fiberglass

If it is new construction the electrician can build a 5-sided foam box opening downwards in the rafters at the location of each light. Run wires through the foam and then blow in insulation on top of the foam box. Then the LED wafer and the power transformer box for the wafer go inside the foam box from the opening in the sheetrock ceiling.

If the insulation is already blown in, then you don't really have new construction as far as ceiling electric goes.