Tanalised Timber
'TANALISED'
timber has been impregnated with a preservative solution under high vacuum
pressure in an industrial vessel. This treatment process ensures deep
penetration into the timber cells, for a longer-lasting protective result
against fungal decay and insect attack than the application of a surface
coating. Pressure-treated timber is leach resistant, ensuring a long and
trouble-free service life in a wide range of conditions, and assured
performance in sensitive environments such as vegetable plots and areas of
wildlife. Desired service lives range from 60 years for internal timbers and 30
years for external timbers such as fence posts in ground contact. The treated
timber initially assumes a green colouration, which fades to a honey brown over
time and eventually a silver grey. No surface applied product is needed to
maintain the integrity of the treatment. Timber treatments are specified in
line with BS8417, in order to ensure that an appropriate level is given
according to the end use of the timber. The Use Class system is an indicator as
to how the timber should be treated in order to match its end use.
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