EIFS Drainage Plane

[pgphillips]

I am trying to model a drainage plane with an air layer just outside the WRB. Is there anything I need to do as far as sources and sinks in the air layer. Should I use something different from the "air layer" material?

I added 1% rain leakage in the WRB; is that the right approach?


Thanks in advance.

[Manfred Kehrer]

Dear Paul,

just use the air layer and an appropriate average air change rate.

The 1% Rain source might cause stability problems. In this case place the source at the OSB/Plywood behind the WRB