Vapor Barrier In Garage Or Not

Not every wall does.

Vapor barrier in garage or not.

Most authorities now agree that vapor barriers are important under certain conditions but not necessarily as a whole house solution for every home. Vapor barriers are not typically intended to retard the migration of air. The confusion arises because air often holds a great deal of moisture in the vapor form. After the insulation is in place you will want to add a vapor retarder sometimes called a vapor barrier if you need one.

Confusion on the issue of vapor barriers and air barriers is common. A detached garage eliminates the risk of dangerous fumes coming into the. Such a location works both as a vapor barrier as well as an air barrier and eliminates the need for an external air barrier not a easy application on a multi storried building as well as any special electrical pans and their sealing. That is the function of air barriers.

When this air moves from location to location due to an air pressure. And the ceiling acts as a enough of a vapor retarder. Most garages don t need vapor barriers because the amount of vapor that diffuses through garage walls ceilings and the floor is not enough to cause wet walls that result in moisture damages. Some debate still occurs over how necessary vapor barriers are but a consensus is growing closer.

Not to mention that closed cell spray foam gives us a barrier between the carbon monoxide and the inside of the home. Resolution of the vapor barrier debate. First of all a garage is not a signicant source of vapor as it is not occupied that much and you don t cook or bath in in it. I install my vapor barrier in the middle of the wall system between the two walls.

You can forego the plastic and use a vapor retarder kraft faced insulation or latex ceiling paint in all other climates except hot humid or hot dry climates. In circumstances where conditions inside a home or office are much different than outdoor conditions water. In hot humid climates attics should not be vented and vapor.