Manufactured housing walls that provide satisfactory moisture performance in all climates

We used the MOIST Computer Model to conduct a detailed analysis of the moisture performance of one wall typical of current construction practice in manufáctured housing, and mo new altemative wall designs with potential for better moisture performance in a wider variety of climates. The analysis showed that the current-practice wall with an interior vapor retarder performed acceptably in a cold climate (Madison, WI), but poorly in a hot and humid climate (Miami, FL). The altemative wall designs both exhibited satisfactory moisture performance in the cold climate and the hot and humid climate, even with moderately severe indoor conditions. The altemative wall designs also performed satisfáctorily in a mixed climate (Little Rock, AR' ). These alternative wall designs should be of interest to the manufactured housing industry, who distributes houses to ali climatic regions of the United States.