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ŠUMARSKI LIST 11-12/1997 str. 55     <-- 55 -->        PDF

H. Turkulin. V. Jirouš-Rajković, I. Grbac:POVRŠINSKA POSTOJANOST DRVNIH GRAĐEVNIH KONSTRUKCIJA Šumarski listbr. 11-12, CXXI (1997). 617-629
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SUMMARY: Wood in exterior structures undergoes certain chemical and
physical changes which cause the slow degradation of wood surface commonly
known as weathering. The disintegration is caused by the combined action
of ultra-violet light from the sun, moisture and oxygen from the air, and additional
effects of wind, rain and other precipitation. Wood changes colour,
roughens and erodes with time. Possible biological attack excluded, weathering
is the most serious risk to wood for building purposes.


The encouraging of the use of wood as the main material for the joinery
and other building components depends mainly on the exploitation of the results
of research on the improvement of the wood durability, its modifications
and its correct and efficient finishing in order to reduce the maintenance costs
and extend the service life of protective and decorative coatings. The paper
analyses the process of wood weathering and presents the literature survey on
the recent research results in the field of the durability of wood building components.