Foam gypsum is a perspective material in construction. According to the requirements for the manufacturing process of foam gypsum, the initial moisture content should be very high. Drying of these products is obligatory requirement to obtain material with sufficient properties. It is possible to change the density of foam gypsum with hemp fibrous reinforcement technologically varying mechanical strength, thermal conductivity and sound absorption coefficients. In the constructions of buildings foam gypsum can be used as filler bounded by gypsum paperboard. In this work we aim to study the moisture transfer in multi-layered wall as usual in construction design. It is important to clarify the structural drying time and the factors that allow it to shorten. For this sample arrangement it is not possible to correct analytical description of drying process. A numerical method is used for calculation of moisture content. Drying process of foam gypsum coated with gypsum paperboard was researched with gravimetric and electrical methods. The validity of the numerical model was verified by comparison with experimental results.
