Wood is a material that can be used for many purposes, but being a natural material it is subject to decomposition. In order to provide wood with the longest possible service life, it is important to select the appropriate species for the intended use, to protect it structurally or to protect it with various treatments, such as biocide impregnation. The moisture content of the wood, which we monitored and measured in the study, has a very strong influence on the degradation of the wood. In addition, we have monitored the temperature and relative humidity of the air. For the measurements we used a Gigamodul system equipped with a Thermofox datalogger from Scanntronik. The moisture content of the wood was measured at six locations on the column of the hayrack made of larch wood, and one moisture measurement was taken on each of the eaves and rafters made of spruce wood. The measurements showed that the wood used does not degrade and can have a long service life, provided it does not become damaged by moisture, as was the case in the past when the roof leaked and some parts of the wood had to be replaced because the roof was not renovated in time.
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