Product Detail



Tanalised® E Pressure Treated Wood is treated with Tanalith® E wood preservative, which contains Copper and Azole Biocides, and that takes into account the ultimate disposal of the treated timber with minimal environmental impact. Suitable for industrial, commercial and residential applications.



Not Applicable.


The wood preservative liquor (concentrate) is blue in colour, diluted in water which is the carrier. The treated timber is a green hue in colour.


25 Year Guarantee against wood decay and insect attack on sawn timber treated for H2 and H3 Applications.

Expected Life


50 years (H2 use)

25 years (H3 Use)

15 years (H4 and H5)


50 years (H2 use)

25 years (H3 Use)

15 years (H4 and H5)

With  exterior use of treated and untreated timber, weathering - i.e. expansion of timber due to temperature changes, exposure to sunlight (infra-red and UV exposure) and through wetting and drying conditions -  will place strain on the timber and result in surface cracking, which can be reduced with a well maintained surface coating. It is important to note that wood preservation (through pressure impregnation) provides the sapwood of the timber with protection against insect attack and wood decay, the surface of the timber may  still require the protection of a water repellent coating to protect the timber against the natural  elements (weather).

Timber in ground contact provides a harsher environment where over time the wet soil conditions and soil nutrients, trace elements, minerals, fertilizer and urea (the former two in agricultural environments) combined with wet soil conditions will eventually degrade treated timber, albeit at a far slower pace than untreated timber.

Indicative Costs

Average treatment cost per m3 of timber (does not include the actual timber cost)

H2 and H3 products are approximately R700.00 per m3

(indication only & will vary depending on treaters pricing policy)

Purchase Options

Please contact manufacturers for more details on the nearest treated timber supplier.


Copper Carbonate - ~22%

Copper Hydroxide 2-Aminoethanol - ~ 47%

Triazole Derivative - <1%

Boric Acid - <5%

Technical Specifications

  • SANS 10005:2011 “The Preservative Treatment of Timber”
  • SANS 1288:2013 “Preservative-treated Timber”
  • SANS 457-3:2013 “Wooden poles, droppers, guardrail posts and spacer blocks”
  • SANS 1920:2009 “Mixtures of copper azole compounds for timber preservation”
  • Timber preservatives in compliance with SANS 1920

National & International Standards

  • National Green Building Certification (USA) for Wolmanized Outdoor treated wood through the Home Innovation Research Labs. (Wolmanized is the name used for marketing for Copper Azole treated timber in the USA)
  • ISO 9001:2015
  • CAIA certificate: Completed audit recognition of third party verification of RESPONSIBLE CARE

Country of Origin

South Africa


Johannesburg Zoo, South Africa: Walkways and animal enclosures

Shaftesbury Primary School, United Kingdom: Wooden Ark and Amphitheatre

Xanten, Germany: Wooden Fort Replica/Children’s Playground

St Theresa School, Holland: Blithoven, Building Structure and Cladding


Drying of timber prior to treatment as per SANS 10005:2011 “The Preservative Treatment Of Timber”




This treated timber avoids the issues induced by an arsenic based treatment. Arsenic pentoxide is a known toxic chemical. The general population is exposed to naturally occurring trace amounts in the environment, in foods and in drinking water. In relation to treated timber products, arsenic could be absorbed via the skin, inhaled when wood is burnt or ingested via small fragments of wood.

Certain products in developed country export destinations such as the USA and in Europe, a non-arsenic containing preservative is required under their regulations. Preservative treatment enhances the durability and utility of wood products by protecting them from biological agents such as decay and termites thus prolonging the useful life of the timber, reducing environmental impacts and reducing the need to add a timber treatment after the timber is in place.

If the required time period is allowed after treatment for the chemical elements of the preservative bond with the wood fibre, before transportation to its destination, and precautions are taken in machining CCA treated timber and allied construction, such as wearing gloves and a face mask, the wood preservative is essentially fixated into the timber structure.  Additional precautions, such as coating treated timber, can also assist in reducing any feared risks of exposure.   




Product contains no added formaldehyde when used in interior applications, such as internal framing.



Wood has a low thermal conductivity. This will reduce interior heat build-up in hot seasons and reduce heat loss to the environment in cold seasons when the product is used as building cladding.

Indoor Environment Quality

Alkanolamine (2-aminoethanol) is a VOC under the EU definition. However, it is used to dissolve copper carbonate/copper and is effectively consumed as it forms copper amine complexes in solution. The product therefore has negligible emissions itself. When diluted and used to treat wood you cannot detect alkanolamine in the treatment plant area or directly

above freshly treated wood.

It could be said that there are in fact no VOC’s in the product, depending on the definition of

VOC’s in any given country, as it is no longer a free alkanolamine and hence is not found in

the atmosphere around customers’ treatment plants.

An IRG paper presented at the 4th International Wood Preservation Symposium also

presented monitoring data, which shows low emissions.

In the Wood preservative liquor manufacturing process, the following exposure limits are



Exposure Limits:

Alkanolamine                              : 3ppm (TLV-TWA)

Triazole derivative                       : Not established

Alicyclic acid ester derivative        : 5mg/m³


In the manufacture of the wood preservative, emissions of components are controlled to

minimum levels through closed vessels with extraction linked to scrubber systems. Workplace

exposure by law has to be controlled below the exposure limits listed above.

During the treatment process, measurements of emissions around a plant are very low and operator exposure is below detection limits.

The actives have very low vapour pressures so there should not be any significant levels in the air. The paper shows amine emissions are very low around the treatment plant area. Note that all the MEA figures are less than values. The analytical method has a limit of detection which then translates to a figure in the air depending on the sampled volume. The lower the sample volume the higher is the less than value based on the detection limit. So for short-term sampling, for example as the vessel door is opened a higher ‘less than value’ occurs, but it still means the MEA was below detection limits.

Electromagnetic Radiation

Not Applicable.


Gloves should be worn during installation to prevent wood splinters in the hands. The wood should be disposed of in accordance with local waste regulations.


Not Applicable.



Emissions – Manufacture of non-ferrous metal (copper) potentially emit toxic substances (source: Non-ferrous Metal Manufacture v1.1, 2001, Structural, and Metal Product).

During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Hazardous combustion/decomposition products may include but are not limited to copper fumes, Copper metal and Copper oxides. However, the MSDS clearly states that burning treated wood is not allowed. Refer to NFPA 654, Standard for the Prevention of Fire and Dust Explosions from the Manufacturing, Processing, and Handling of Combustible Particulate Solids, for safe handling.

Physical – Known physical impacts of this product include the destruction of forests. Extraction of copper results in the removal and stockpiling of topsoil, and removing overburden and inter-burden, resulting in modified soil profiles, topography and drainage.   Waste residues are not allowed to enter drains or contaminate soil or water.




Emissions – As long as stated procedures are followed, there are no emissions to aquatic ecosystems.

Physical – In the event of a fire, there is potential for water runoff to enter aquatic ecosystems, this is to be prevented as when introduced to a water course, this product is very toxic to aquatic organisms, may cause long-term adverse effects in an aquatic environment. Waste residues are not allowed to enter drains or contaminate soil or water.



Greenhouse gas (GHG) – Products takes advantage of the low amount of energy required to manufacture wood products. The ability of timber products to store absorbed carbon and emit minimal greenhouse gases during production is a major consideration when comparing timber to alternative materials e.g. steel. The carbon sequestered during the life cycle of timbers has the potential to offset the emissions from the use of the preservative and result in a carbon neutral producer even a carbon sink.

Greenhouse intensity – Product is manufactured in United Kingdom.  Transporting the

concentrated treatment chemicals is significantly more efficient than transporting finished

treated timber. Local impregnation of lumber minimise greenhouse gas emissions associated

with transport of timber products.


Transport intensity –Product is manufactured in United Kingdom. GHG intensities for shipping product are shown below. Shipping port from country of origin is in Liverpool. Destination port is in Durban. No Product weight was given, so weight has been assumed at 10kg.

Greenhouse Intensity for Container Shipping of Tanalised E – 1.63 kgCO2e / 10kg

Table below provides land transportation greenhouse intensity figures to help calculate the greenhouse gas intensity of land transportation from shipping port.

Light commercial vehicle

Rigid Truck

Articulated Truck

0.001451kgCO2e /

0.000195kgCO2e /

0.000069kgCO2e /

Transport intensity figures sourced from Australian National Greenhouse Gas Inventory 1990, 1995 and 1999 and WWF International, Inland Navigations and Emissions, 2005.

Operational efficiency – There is no energy consumption during service life. When used in construction low thermal conductivity can reduce building heat loss in cold seasons.

Re-use Efficiency –
The product retains physical characteristics in re-use/recycling. There will be some energy used in secondary construction process.

Toxics and Pollutants – This product contains some toxics and pollutants, however with the appropriate EMS in place, risks are minimal

Ozone Depletion – Not Applicable

Urban Heat Island Effects – Not Applicable

Noise – Not Applicable



The use of wood preservatives prolongs the life of timber products thereby reducing pressure on timber resources.


Resource Efficiency

Wood is a renewable, recyclable resource. Approximately at least 10% w/w of the preservative treatment is re-cycled material.

Embodied Fossil Fuel Energy

Transport intensity – Product is manufactured in United Kingdom. GHG intensities for shipping product are shown below. Shipping port from country of origin is in Liverpool. Destination port is in Durban. No Product weight was given, so weight has been assumed at 10kg.

Energy intensity for Container Shipping of Tanalised E – 19.97 kgCO2e / 10kg.   0.0029 MJ/m3 Figure taken from US LCA on copper azole treated decking products


Embodied Water

Treatment product is 20-25% w/w water.


Treated wood product has a minimum service life of:

H2 environment 50 years

H3 environment 25 years

H4 and H5 environments 15 years



Treated timber can be re-used in subsequent construction projects.



Yes, treated timber can be repaired. Supplementary preservative products are available for remedial protection.


Design for Dematerialisation

Not Applicable.

Design for Disassembly

Not Applicable.


Treated timber can be re-used as mentioned above. Embodied energy can be recovered by waste incineration. Incineration should take place only in permitted incinerators.


Not required for integrity of preservation properties.

Product Takeback Scheme

Extended Producer Responsibility (EPR)


Audits and Environmental Reporting

Lonza, the corporate company undertakes a Responsible Care Audit of all its operating facilities world-wide on a regular basis. As a business unit level, TUV audits their Quality and Environmental Management Programs.



Environmental Policy

Arch Wood Protection Business Unit SHE and Responsible Care Policy

ISO 9001:2015 accredited and compliant.

Social Enhancement Programs


Technology Transfer Programs

Arch Wood Protection supplies plant engineering expertise into developing countries, and has provided lease treatment plants (Arch provides the capital for the plant) to broad based black economic empowerment (BBBEE) projects in South Africa.

Environmental Management Systems (EMS)

Arch Wood Protection has an Environmental Management System in place.



Based on Ecospecifier R-Phrase and S-Phrase and Risk Assessment there are no issues of concern with this product. All risks identified are at a manufacturing level where correct procedures and use of PPE significantly reduces risk to a negligible level.


Information last verified on 12th January 2021 


Regular Untrated Timber Wood


Wood, Timber, wood preservative, long lasting, biocides


sustainability criteria satisfied

Other Vital Signs

Expert Assessment

Documented manufacturer claims

Independent LCA

Material Safety Data Sheet (MSDS)

Corporate Responsibility

Social/environmental enhancement programs

Environmental policy

Certified EMS

Environmental Management System (EMS)

Air Pollution

Greenhouse Gas (GHG) Neutral

Reduced or no toxicity through life cycle

Habitat & Biodiversity Conservation

Reduced terrestrial impacts

Workplace OHS, Occupant Health, Human Wellbeing

Reduced or no toxicity through life cycle

Low/Reduced offgassing

Energy Resources

Downstream reduction of energy use

Resource Depletion