The Definition of interior/exterior in the LOW-EMITTING MATERIALS credit is a bit confusing for me. What is exaclty defined as a waterproofing membrane or air- and water-resistive barrier materials?

In Europe we usually have walls made of bricks or concrete, where an insulation system is applied on top (outdoor). What kind of products should I count as exterior and interior? Is the brick/concrete wall itself the air- and water -resistive barrier, so everything that is applied on top of the wall is a exterior product, and everything that is faced indoors is considered as a indoor product?

We just need to know this because we have to decide for which of our products we have to make emission test.

Thank you.