Some recent challenges and peculiarities in moisture practices and assessment of buildings Professor Carsten Rode, Technical University of Denmark, Denmark
Experiences with MgO boards.
MgO boards became the most used material for sheathing in the years 2010-2014 before it was realized that they gathered water from ambient air, which caused disintegration of the boards themselves and damage to the adjacent building with salty water. We will account for some investigations of the boards.
Interior insulation of solid brick walls.
There is great interest in adding thermal insulation to the solid brick façade walls of historic buildings, and it cannot always be permitted on the outside. Adding insulation on the inside is potentially a challenge with regards to moisture risk. This has been investigated in several projects, and we will communicate some of the experiences.
Moisture modelling with hysteresis in sorption isotherms
Transient moisture models need the sorption isotherms to calculate the equilibrium between relative humidity and moisture content of materials. However, most models do not take into consideration that the equilibrium is not unique, since there can be significant differences between sorption curves for moisture uptake and drying – so a situation of hysteresis exists. What could be the implication for the results of moisture calculations and for subsequent assessment of mould risk.
Vanhojen rakennusten korjaaminen Virossa – haasteet ja ratkaisut rakennusfysiikan kannalta Professor Targo Kalamees, Tallinn University of Technology, Estonia