Air Vapor Barrier Box

In summer when humidity is high it increases permeability so that moisture can escape as air tightness is maintained.

Air vapor barrier box.

It was invented for use in energy efficient airtight housing. This helps control heating costs in the winter and cooling costs in the summer. The job of both air barriers and vapor barriers is to prevent moisture from forming at that critical point they just do it in completely different ways. Lessco low energy systems supply company inc.

This lessco air vapor barrier box is designed to attach to a wall or ceiling frame and can contain up to 3. They feature a foam gasket that provides a vapor tight seal preventing the free flow of air through the box. For extra protection against moisture the membrain continuous air barrier and smart vapor retarder is your weapon of choice. The lessco air vapor barrier box can be used in many different configurations.

F5 air vapor barrier is available in a 325 sq. Air leaks can occur around electrical boxes in exterior walls and ceilings sometimes carrying water vapor that can condense in the wall and attic cavity leading to rotting mold growth and an increased heating and air conditioning load. The rule for vapor barrier installation in cold climates is to have it on the interior with at least 2 3rds of your insulation on the outside of the vapour barrier. Low voltage wiring application.

The lessco air vapor barrier box was developed in 1985 by stephen lentz an airtight homebuilder at that time. The lessco air vapor barrier box eliminates air leakage through electrical boxes prevents moisture damage in walls and ceilings improves energy efficiency. However cold air often finds its way through missed holes and cracks and an electrical box by itself offers no protection and unless ensure that it is has a vapor barrier you run the risk of it corroding and causing future electrical problems. The vapor barrier box is designed to meet the energy efficiency requirements of modern homes.

The ceiling box comes with an adjustable hanger bar for ease. The factory controlled thickness of the membrane ensures uniform barrier properties and the woven polypropylene film increases strength and has a non skid surface suitable for the bonding of subsequent layers. In winter when humidity is low it continues. It lets wall cavities dry out to help prevent mold.

The product has been on the market and used throughout the united states including alaska since 1985.