Hi ALL.   I am working through our wall design and am concerned to make sure we don't get moisture build up. Our architect seems happy enough but because we need great air tightness so an air tight barrier on the inside I have been working with WUFI to see how the wall performs I only have the free versionof WUFI, limited materials and only Grenoble climate data. I have read loads around WUFI (good and bad) and dew point calcs plus run a few simulations. The wall build up (inside - out