What is an air barrier / Green Building & Sustainable Home Renovation Information & Advice

...annot afford to keep building or heating houses like that.  So is the answer to not insulate? No, there isn't enough energy for that. Is the answer to not use composite wood materials? No, there aren't enough trees for that. What we need to do is acknowledge these changes, and design walls to handle moisture effe...

...barrier, and it goes on the warm side of the insulation. Air barriers on the other hand, can be anywhere in the wall assembly and as plentiful as you like. It is highly unlikely that your air barrier will be flawless, so by all means have a second and a third. This is what is referred to as the 'belt and suspenders' ap...

...air barriers and vapor barriers The job of a vapor barrier is to prevent vapor diffusion, and the job of an air barrier is to stop air leakage through differences in air pressure. A wall system should have one vapor barrier, but can have many air barriers. A vapor barrier can act as a very effective air barrier, but an...