I have an attached garage 22x24 which is going to insulated and covered in drywall. I do not plan on heating this area. My builder and building inspector indicate that because this will be an unheated area that it is best not to use any vapor barrier- just insulate and drywall. Reason they give it that if a vapor barrier is used I will experience condensation problems.

What is the proper method vapor barrier or not?

Thanks JTW

 

http://www.eere.energy.gov/consumeri...heets/bd4.html

This site explains the use of Vapor Diffusion Retarder (Vapor barrier) to you.

Depending on the area you live determines if a vapor barrier should be applied or not and how it should be applied.