Here at Grangewood Fencing Supplies, the majority of the timber that we supply is pressure treated. We supply Tanalised E treated timber which is pale green in colour and Tanatone treated timber which is brown (often referred to as celbronzed). The following article explains just exactly what these terms mean.
Tanalised E pressure treated timber has been impregnated with Tanalith E wood preservative under controlled conditions in a vacuum pressure impregnation plant.
Tanalised E pressure treated timber is protected against fungal decay (rot) and insect attack to ensure an extended service life to the timber/timber components, when treated to the appropriate specification.
Following impregnation, the preservative bonds with the wood structure such that it cannot easily be removed from the timber.
Tanalith E wood preservative is registered and cleared for use under the UK Control of Pesticides Regulations. The preservative contains copper and triazole biocides.
Typical uses for Tanalised E pressure treated timber include general construction, cladding, garden and leisure wood structures, fencing and playground equipment.
Tanalised E pressure treated timber is available with built-in brown colour – Tanatone pressure treated timber.
THE TREATMENT PROCESS
When working with timber, wear gloves to protect the skin against abrasions and splinters. Any cuts and abrasions should be protected by a waterproof dressing.
When power-sawing and machining, wear goggles to protect the eyes from flying particles. Wear a dust mask and, whenever possible, perform these operations outdoors to avoid accumulations of airborne sawdust.
Avoid frequent or prolonged inhalation of sawdust. Consult HSE Guide EH40, available on the HSE website (www.hse.gov.uk), for further information on workplace exposure limits for wood dust.
In order to prevent injury, care should be taken when lifting or moving timber.
After handling or working with treated timber, all exposed skin should be washed before commencing other activities, especially eating, drinking, smoking or going to the toilet. If sawdust accumulates on clothes, clean them before reuse. Launder heavily soiled clothes separately from other household wash items.
END USE CONSIDERATIONS
Tanalised E pressure treated timber can be used in internal and external building applications and outdoors, both in ground contact and above the ground, without any need for further protection.
Tanalised E pressure treated timber is treated to meet the requirements of a particular end use. This end use suitability should be confirmed by the supplier of the treated timber. When specifying timber for exterior situations, either treated or untreated, consideration should be given to the propensity of the material to stain light coloured adjacent faces, such as render, paving flags or coated timber surfaces, with its natural extractives during the weathering process. This staining effect can be highlighted where Tanatone treated timber has been selected, although the potential for this to occur does reduce over time. Where used in this type of external environment, it is highly recommended that any contact between the timber and these surfaces is eliminated by design, in order to prevent surface discolouration. Treated timber should not be used where it may come into contact with drinking water or for food preparation surfaces/structures or containers for storage.
When considering the use of Tanalised E pressure treated timber around fish-ponds, please contact Arch Timber Protection for advice.
ON-SITE PRECAUTIONS & WASTE DISPOSAL
All sawdust and construction debris should be cleaned up and disposed of after construction.
Tanalised E pressure treated timber is not classified as hazardous waste. However, post treatment processing wastes, such as sawdust and offcuts, must not be used for animal litter or bedding.
Tanalised E pressure treated timber should not be used for fuel in barbecues, cooking stoves or grates. Householders should dispose of the timber, sawdust or ash through the ordinary waste collection service or at a local authority amenity/disposal site. Any waste timber, sawdust or redundant timber from commercial or industrial use (e.g. construction sites) should preferably be recycled by re-use, or disposed of to an authorised landfill or to a correctly controlled and approved waste incinerator.