Can I install cellulose around recessed fixtures?
It is generally not recommended to install recessed fixtures if the ceiling contains cellulose or wool mat.
However, it is possible to do this by installing an IC type metal case; some IC type recessed light fixtures are designed for installation in a cavity filled with thermal insulation.
In some cases, using recessed LED lights (light emitting diode) can be installed, but it is important to check the manufacturer’s specifications.
See the recommendations of the Corporation of Master Electricians of Québec.