August 26, 2009

The use of one-dimensional hygrothermal simulation software has been well established for a wide range of wall and roof assemblies. However the use of such software has previously had a limited ability to accurately model the physics of enclosures with ventilated claddings. The most recent version of WUFI 4.1 has added the ability to model enclosure systems that incorporate embedded sources and sinks of moisture and heat. This capability can be used to model source effects such as air and rain leakage within a wall assembly or sinks such as drainage and ventilation.