H1

INSIDE, ABOVE GROUND, DRY

  • Insect borer (other than termites) hazard
  • Framing, flooring, furniture etc. (Contact Arch for informati on regarding Diffusol)

H2

INSIDE, ABOVE GROUND, DRY

  • Insect borer and termite hazard Framing, flooring, trusses

 

H3

OUTSIDE, ABOVE GROUND

  • Moderate fungal decay and termite hazard
  • Decking, fencing, cladding, fascia, window joinery, exterior structural timber

H4

OUTSIDE, IN GROUND

  • High fungal decay and termite hazard
  • Fencing, greenhouses, pergolas, non-structural and landscaping timbers
  • (Contact Arch for information regarding Creosote)

 

H5

OUTSIDE, IN GROUND OR FRESH WATER

  • High fungal decay and termite hazard
  • Engineered retaining walls, building poles, pilings and cooling tower fill, structural or critical applications
  • (Contact Arch for information regarding Creosote)

H6

MARINE WATER EXPOSURE

  • Marine borers hazard Marine piles, jetty crossbracing, landing steps, sea walls
  • (Contact Arch for information regarding Creosote)

 

For high human contact applications such as children's play equipment, garden furniture, picnic tables, exterior seating and domestic patio, decking and handrails, Arch recommends Ecowood (Tanalised® E) and Clear H3 (Tanalised® V). These alternative treatments are approved by the Australian Pesticides and Veterinary Medicine Authority for the above uses. Tanalised® C is being phased out for high human contact applications.

The Australian Pesticides & Veterinary Medicines Authority have directed that from March 2006, CCA (Tanalised® C) is not to be used for the treatment of wood products intended for applications such as children's play equipment, garden furniture, picnic tables, exterior seating and domestic patio, decking and handrails where frequent and direct human contact is expected. Arch recommends that Ecowood (Tanalised® E) and Clear H3 (Tanalised®V) are suitable alternatives for these situations.

About Tanalised Treated Pine

Hazard LevelService
Condition
Biological
Hazards or Pests
Typical
Applications
Products
H3Above ground, outside, exposed to weather & dampnessFungal decay, termites & borersDecking, fence pickets & rails, pergolas, exposed bearers, claddingTanalith Oxide Tanalith E
H4In ground or ground contact, outsideFungal decay termites & BorersFence posts, sleepers, landscaping, garden edges & boxesTanalith Oxide Tanalith E
H5In ground or ground contact, outside, critical or structural use.Fungal decay, termites & BorersEngineered retaining wall, building polesTanalith Oxide

Tanalised Treated Timber - What is it ?

Treated timber is highly versatile. It is used extensivelly both inside and outside houses and commercial buildings, and in landscaping.

Treatment is carried out by impregnation of the timber, under vacuum and pressure, with tanalised preservatives in accordance with Australian Standards.

After treatment and redrying the tanalised preservative becomes substantially part of the cellular structure of the timber. It can not be removed by weathering, rain, wetting, soaking or scrubbing. The treatment can never be washed out.

Yes, Tanalised Treated Timber is safe to use

The preservative chemicals are toxic to insects and fungi, which is, of course, their purpose. Provided that common sense precautions are observed, preservative chemicals do not present a hazard to humans when fixed in the dried timber.

Sometimes a white powder will appear on the surface of the timber. This is mostly Sodium Sulphate, a harmless substance which, if necessary, can be simply brushed or hosed off.

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