Recently, we have seen a large increase in the use of wood, especially in construction. Although it has many good mechanical and physical properties, wood is also known for its poor resistance to abiotic and biotic factors. Fire is the fastest destroyer of wood, so we need to take care of fire protection in buildings. In the case of high temperatures, wood naturally takes care of itself with its own mechanisms. Nevertheless, we can further improve its resistance to burning. Because we live in a warm and humid environment, wood is also likely to be exposed to fungi. For this reason, we used Burnblock fire retardant, and were interested whether, in addition to protection against burning and high temperatures, we would also observe a fungicidal or fungistatic effect. In this experiment we used the fungi Trametes versicolor and Gloeophyllum trabeum and then we compared the results. The samples were protected by immersion and impregnation. In addition to fire and deterioration tests, we also performed measurements of humidification in 100% relative air humidity and tests in relation to the hydrophobicity of the samples. The protected specimens have been shown to be less susceptible to additional moistening and consequential fungal development. In fire tests, the protected samples performed better than the unprotected ones, as none of the protected ones caught fire or got severely damaged. The deterioration tests showed that the fungus grew in the unprotected specimens more easily in than the protected ones. In this diploma thesis, we came to the conclusion that Burnblock can be classified as an agent that has both fire retardant fungicidal effects.
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