Analysis of wooden shingles after eight years of application

Namen diplomske naloge je bil preučiti vpliv izpostavljenosti lesene strešne kritine vremenskim in biološkim dejavnikom. Ugotoviti smo hoteli tudi kako različne tehnike zaščite vplivajo na povečevanje trajnosti in življenjsko dobo skodel. V diplomski nalogi smo omenili, kako se je lesena kritina skozi leta razvijala in kako posamezne lastnosti lesa vplivajo na trajnost, ter katere lastnosti hočemo izboljšati za boljše rezultate. Zanimale so nas tudi razlike, ki so se pojavile na pokritih in izpostavljenih delih skodel. Eksperimentalno delo smo pričeli z dokumentacijo in izdelavo vzorcev nezaščitene, termično modificirane in s Silvanolinom zaščitene smrekovine. Vzorcem smo določili hrapavost, vodoodbojnost (stični kot), tlačno trdnost in količino preostalega bakra. Po obdelavi in analizi podatkov smo ugotovili in potrdili, da je zaščita lesenih streh nujna. Po osmih letih uporabe nismo zabeležili razlik v kakovosti zaščite s Silvanolinom in termično modifikacijo. Do razlik prihaja le v ceni in estetiki, kar pa je velikokrat zelo pomembno pri odločitvi za kaj se odločimo.The aim of this thesis was to investigate the influence of weathering and biological factors on wooden roofs. We also wanted to find out how different protection techniques affect the durability and service life of shingles. In the thesis, we reviewed how wood roofing has evolved over the years and how each property of wood affects sustainability, and which properties we wanted to improve for better results. We were also interested in the differences that occur on the covered and exposed parts of the shingle. We began the experimental work by documenting and making samples of unprotected, thermally modified, and Silvanolin-protected spruce wood, from which we then determined the roughness, water repellency (contact angle), compressive strength, and amount of copper remaining in them. After processing and analyzing the data, we determined and confirmed that the protection of wooden roofs is necessary. After eight years of application, we did not find any differences in the quality of protection with Silvanolin and thermal modification. The differences are only in terms ofprice and colour, although these are often very important factors when choosing a product