The aim of the diploma thesis was to determine how certain surface damages affect the moisture dynamics of wooden window profiles. For the research, we prepared samples of various wooden window profiles with surface scratches and hail damage and exposed them to a weekly cycle consisting of 4 phases (exposure to high humidity, drying, rain simulation, drying) over a period of two months. After each phase of the cycle, the samples were measured for mass and moisture content. We also analysed the colour changes of the surface. The aim of the thesis was also to determine how certain surface damages affect the development of mould and staining-fungi. We measured the mass of another group of equally prepared samples every week that were exposed to a climate with high relative humidity and observed the development of mould and staining-fungi on the surface. We found that surface damage did not affect the colour change. Control samples without surface coating had the largest colour changes. The hypothesis that the samples of damaged wooden window profiles will have a higher wood moisture content than the reference undamaged samples was correct, as with each exposure to high humidity, the damaged samples reached higher values. The damage did not affect the final moisture content after drying. Hail damage had the greatest impact on moisture dynamics. The second hypothesis that staining-fungi would appear under the damaged protective film sooner than under the undamaged protective film was correct, as hyphae first appeared in the damaged areas.
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