DIN EN ISO 13788 PDF Download

The DIN EN ISO 13788 standard provides calculation methods to assess the hygrothermal performance of building components and elements. It focuses on two key aspects: internal surface temperature and interstitial condensation risk.

Firstly, the standard offers a simplified calculation method to determine the internal surface temperature of a building component or element. This helps identify the temperature below which mold growth is likely to occur, based on the internal temperature and relative humidity. It also aids in assessing the risk of other internal surface condensation problems.

Secondly, the standard provides a method to evaluate the likelihood of interstitial condensation due to water vapor diffusion. However, it should be noted that this method does not consider certain physical phenomena like variation of material properties with moisture content, capillary suction, liquid moisture transfer within materials, air movement through gaps or air spaces, or the hygroscopic moisture capacity of materials. Therefore, it is only applicable in situations where these phenomena can be assumed negligible.

Lastly, the standard includes a calculation to determine the drying time for water in a layer between two high vapor resistance layers and to assess the risk of interstitial condensation occurring in other areas of the component during the drying process.