ABSTRACT
Some Swedish prefabricated home manufacturers have noticed that some prefabricated building components have been returned because of mould and moisture damage despite the fact that these components have undergone quality control during construction. The building components are constructed in a factory setting and wrapped with polyethylene for protection from the elements. In some cases, the components are stored outdoors until delivered. It was found that by wrapping the components indoors, the indoor environment of these components is similar to the indoor environment of the factory, depending on the materials used and the amount of moisture in the materials. Since these units are not ventilated, condensation occurs in the component when stored outdoors. If stored for too long, moisture damage can occur. This paper looks at how the risk of mould and moisture problems can be reduced as well as the effects of transportation on the indoor environment of the components.
