Foam Insulation Around Can Lights
2x8 construction with osb roof sheathing.
Foam insulation around can lights. Which one they use i will know before the project starts but for now i need info on using recessed can lights with it. Even though i already air sealed all my light fixtures from within the attic i decided to go above and beyond by air sealing the very same fixtures. I have an attic conversion project that i am bidding and they are looking to use either open or closed cell spray foam insulation for the ceiling. Notice that i said regular insulation such as fiberglass or cellulose insulation not spray foam insulation.
Apply the sealant around the cable and along the edge of the cover where it rests on the ceiling. You can stem the flow of air and money by air sealing your light fixtures from the inside with just a roll of painter s tape a can of spray foam insulation and a tube of painter s caulk. The plan is 6 7 of spray foam. Ic or in contact recessed can lights are designed to be installed with regular insulation installed directly beside or on top of them.
Spray foam insulation is an air seal and works a lot better than regular insulation does. 4 construct a circular dam to place around each can with wire mesh or sheet metal if the lights are not ic rated. Now it will be safe to heap insulation onto that spot. Stuff the insulation around the gap between the lip of the can and the drywall.