Insulation Cover or IC-rated housings are recessed lighting fixtures that are safe to have in direct contact with insulation materials. With fully sealed housings, the fixture becomes airtight and reduces heating and cooling costs.

IC-rated housings generally cost the same as unrated housings. Fully sealed housings typically have a $5 premium. Note that cathedral ceilings or joist cavities can present problems due to inadequate room for insulation.