You need a membership to view the full content.
Already Enrolled?
Login to access the full content.
If you haven’t enrolled yet, click the Enroll Now link below to get started and gain full access.
Enroll Now

Design principles for moisture management Air Gaps – as mentioned above, allow the exterior wall system to breathe, and for moisture that condensates or does find its way behind the siding, stucco, brick, to leave the space. This air gap allows air to dry out, and to drain out of the bottom of the wall system. This can be accomplished in two ways: furring strips, or rainscreen. In my opinion, both options provide water and air flow. Here is an image utilizing furring strips (Image below), In most cases furring strips, which are narrow pieces of ½-inch wood, are fastened vertically for horizontally applied siding.

Rain screen, pictured below can also contain an addition vapor barrier membrane, with coiled material over the WRB, which creates both an air gap and water flow ...