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Please note our offices and warehouses will be closed on the Spring Bank Holiday. Orders placed before 4:30pm on 24th May 2024 will be processed as normal. Orders placed after 4:30pm or over the Bank Holiday weekend will be processed on 28th May 2024.

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Wood Treatment

We treat our timber with TANALITH E. wood preservative after cutting and machining to give maximum benefit to our furniture.

We treat to BS EN355-1 'Use Class' 4 – this is the highest class for timber and provides the ultimate protection against direct soil or freshwater contact. TANALISED pressure-treated timber can be used with total confidence in Use Classes 1–4

Use Class Summary

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What is TANALISED timber?

TANALISED pressure treated timber is a high-performance product with a guaranteed service life exceeding 15 years depending on its end use (see above Use Class summary).

'TANALISED' timber has been impregnated with a preservative solution under high vacuum pressure in an industrial vessel to BS8417, which will make sure that the appropriate depth of treatment is provided. This innovative 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.

The latest TANALITH E. wood preservative, a unique combination of copper and organic biocide ingredients, now has over 20 years of proven performance around the world in providing the very best protection for timber. It is approved for use by regulatory authorities and the biocides contained in the preservative are supported under the Biocidal Products Regulation.

The colour of TANALISED pressure treated timber slowly weathers from an initial pale green hue to a warm, honey brown and in the longer term to a natural silver grey. This weathering process does not indicate any loss of preservative protection.

Enhanced protection against the weather can be obtained by using a suitable brush applied water repellent coating. These are particularly effective when applied as a regular maintenance product to the surface of TANALITH pressure treated timber. Always follow the coating manufacturer’s instructions.

Want to find out more? Click here to download our specifiers guide.

Preservative Treatment Process

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  • Wood Treatment Before
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