Installing Vapor Barrier Around Recessed Lights

Water vapor can pass through building materials in several ways including direct transmission and by heat transfer but studies suggest that fully 98 percent of the moisture transfer through walls occurs through air gaps including cracks around electrical fixtures and outlets and gaps along baseboards.

Installing vapor barrier around recessed lights.

The attic is a pain to get into and is full of trusses so had always avoided the recessed light talk with my wife to be because i know traditionally a recessed can would also need to have a large vapor boot installed to seal with the existing barrier. This product it made out of very thin plastic and will burn or melt when exposed to heat. Thus installing vapor barriers on wall surfaces must. No this project is not intended to be used as a fire stop just as a vapor barrier only and it is to be used with the bazz recessed light housing bt1200.

Vapour barrier and air tight ic potlights. Just use the tenmat product or use ic rated recessed fixtures. It is important to use a vapor barrier when installing an elec. With the recessed lighting vapor barriers do i leave them empty or do they get illed with insulation as well.

Installed recessed potlights ic type inside large plastic shells vapor barrier. Installing batts in most existing homes however is rarely feasible as drywall would have to be torn down a messy expensive time consuming proposition. I tried the vapour barrier covers you can purchase and they were too big i could get a tight fit. In this video i show you the process for installing a vapor barrier around an electrical box.

Made my own by cutting rigid insullation forming into boxes to fit around with edges sealed with tuck tape. We install a number of pot lights prior to insullating our attic. I am going to reinstall new insulation and cover the hot side with vapor barrier before installing drywall. Remove any nails screws staples or large splinters on the joist face where the vapor barrier attaches.