How to Insulate Around a NIC-Rated Fixture

Recessed light fixtures are either IC-rated (Insulation Contact) or NIC-rated (Non-Insulation Contact). IC-rated fixtures are usually used in residential construction where attics are insulated for energy conservation. They can be covered with insulation, both batt and blown (cellulose), without worry. NIC-rated fixtures, on the other hand, are more commonly found in commercial buildings where attic insulation is not present. You must maintain at least three inches of clearance around a NIC-rated fixture, regardless of the type of insulation you use.

12-inch metal flashing
Insulation (batt or blown)

Instructions

- 1
  Clear the area around the fixture of insulation or other debris.
- 2
  Bend 12-inch metal flashing into a tube by hand. Lower the tube onto the fixture so that there is at least three inches of clearance between the flashing and the fixture.
- 3
  Unroll batt insulation between the ceiling joists, but stop when you get to a fixture. Slice some insulation from the roll and push it into the space between the flashing and the joists. Continue installing the roll on the other side of the fixture.
- 4
  Hold the blower hose so that insulation falls about a foot in front of you if you are using blown cellulose. Fill the cavities between the joists, but don't get any insulation in the flashing tubes. Insulate between the flashing and joists by hand.

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