PSI - Issue 81

Andrii Pavluk et al. / Procedia Structural Integrity 81 (2026) 198–204

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Fig. 11. Frequency of defects in roofs with a service life from 10 to 50 years

Fig. 12. Frequency of defects in roofs with a service life of more than 50 years

4. Conclusions 1. The most common defect in timber roof structures is shrinkage cracks. The older the roof and the timber elements, the larger the cracks. 2. The second most common defect in timber roofs is the corrosion of metal components in structural joints. 3. The greatest impact on timber roof elements is caused by moisture and poor ventilation. Combined, these factors lead to rapid and severe deterioration of timber structures. 4. Timely repair and maintenance of timber roof structures, along with a proper ventilation regime in the attic space, significantly increase their service life. References Albrektas, D., Juciene, M., Dobilaite, V., 2020. The influence of thermal modification on the resistance to water impact properties and strength of wood used in outdoor conditions. Wood research 65(3), 353-364. Aleksiievets, V., Gomon, S., Aleksiievets, I., Homon, S., Ivaniuk, A., Zadorozhnikova, I., Bandura, I., 2024. Influence of thicknesses of outer and middle elements on the performance of nail connections. Procedia Structural Integrity 59, 710-717. Blass, H.J., Frese M. Failure analysis on timber structures in Germany, 2011. In: Kohler J, Fink G, Toratti T, editors. Assessment of failures and malfunctions. Germany: Shaker Verlag.