At JT Atkinson, we source the highest quality timber and treat it on site at our Stockton branch with high quality Tanalith. Our tanalised timber is available to buy online or in branch. In part one of this Treatment Guide, we discussed tanalised timber, it’s difference to Tanatone timber and the treatment specifications. Let’s delve deeper into the appearance and usage of our timbers…

Treated Timber Appearance

Due to the natural variability of the timber proportions, colour variations may occur (i.e., the darkening of some hardwoods). If needed, the Tanalith initial green colour can be restored using an appropriate coating product.

Alternatively, Tanatone has a built-in brown appearance. Tanatone does not hide or mask any impurities (for example wood grain, discolourations, fungal staining or wood defects). The Tanatone treatment colour will also fade over time, so as with tanalised timber, this can be refreshed over time.

To improve the protection against weather, an appropriate brush-applied water repellent varnish can be applied as part of the regular maintenance routine, to the surface of the treated timber. Sometimes, timber with high mobile resin levels appear blue at the point of treatment, but this would rapidly fade to the overall colouration of the treated timber.

Typical Applications of Treated Timber

Buildings – Used as structural foundations and universal timbers in domestic, commercial and public constructions. Examples include roof shingles, battens, cladding, wall frames, sole plates, joists, beams subfloors or roof timbers

Garden & Landscaping – For some uses, particularly with thin cladding-type timbers, it may be fitting to use brush-on water repellent. Timbers can be used around fishponds (but not in direct contact with water), decking, gazebos and similar, bridges, summer houses, playground equipment, fences and other garden applications.

Agricultural & Horticultural – Use of treated timber does not affect organic status. Therefore, these can be used on and around vegetable beds, hop poles or tree and vine stakes.

Enclosures & Fencing – Used across fencing needs, from security to farm use. Including but not limited to fence posts, rails, droppers, gates, gate posts and stiles.

Transport – Floors and other timbers for railway and road vehicles, container floors and linings, packing cases and cable drums.

Engineering – Examples include transmission poles, decking, shells, bridge decks, handrails, cable ducting and sound barriers.

Tanalith timber is treated to meet the requirements of a certain end use, so therefore can be used both internal and externally, in ground or above ground with no need for further protection.

It is possible for timber used outside to stain light-coloured adjacent materials due to its natural extractives during weathering. It is recommended that contact between timber and surfaces such as swimming pool tiles, coated timber surfaces or render is removed by design – even though the potential for this to occur does reduce with time.

Treated timber should not be used where it may come into contact with drinking water or food preparation surfaces, structures or storage.

You can view all our treated CLS Studwork and rough sawn timber here: https://www.jtatkinson.co.uk/timber

Or get in touch in branch or online today and one of our team will be happy to help with any queries you may have.