
Creosote and Tanasote® Octopost features
- Redwood timber* grown in Sweden in or near the Arctic circle which gives added strength due to its very slow rate of growth. Picture below demonstrates the slow rate of growth. Impressive!
- Posts are machined into an octagonal profile providing a flat surface for fixing.
- Kiln dried for maximum absorption of high pressure creosote or Tanasote® treatment.
- OCTOPOST offer a 25 year guarantee but have a life expectancy of 30-40 years.
- Each post is identical making erecting quicker and giving a consistency which is pleasing to the eye.
- Large range available from 1.5m to 3m in length
Choose between the two treatments below
Creosote
A long term option for those wanting to erect and leave for decades. Oil based treatment that has a proven track record.
Creosote features and benefits
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- 25-year guarantee: Backed by a manufacturer’s warranty for up to 25 years, ensuring long-term peace of mind.
- Long-lasting protection: Creosote treatment significantly increases wood’s resistance to decay, insects, and fungi, offering decades of service life.
- Cost-effective over time: Though initially more expensive, their durability reduces the need for frequent replacements and maintenance.
- Excellent for ground contact: Highly resistant to moisture and rot, making them ideal for posts embedded in soil or exposed to the elements.
- Strong structural integrity: Maintains strength even in harsh outdoor environments.
- Proven track record: Used for over a century in railroad ties, utility poles, and marine pilings for over 150 years.
- Resistant to termites and other wood-boring insects: The chemicals in creosote repel pests effectively.
- Weather-resistant: Withstands freeze-thaw cycles, UV exposure, and extreme weather conditions.
- Please note: PPE should be used when working with creosote products.
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Tanasote®
This relatively new treatment is a modern hot oil-based wood preservative containing copper and innovative organic co-biocides designed specifically to protect high performance heavy duty timbers and deliver a service life of 40 years plus, whilst minimising the risk of early failures.
Developed and manufactured by Arxada, Tanasote® was approved in March 2021 under the Biocidal Products Regulation (BPR) Authorisation Process. It has been granted the maximum 10 years authorisation, passing all necessary environmental, human and animal health risk assessments. It is the only oil-based wood preservative that has this authorisation.
Tanasote® features and benefits
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- 25-year guarantee: Backed by a manufacturer’s warranty for up to 25 years, ensuring long-term peace of mind.
- Treatment offers a service life of at least 40 years to protect against rot and insect attack, including efficacy against copper tolerant organisms, minimising early failures.
- Innovative: A wood preservative based on an innovative combination of organic biocides and copper in a mobile formulation
- Oil based product: Archives high penetration depth into the timber with good water repellency and improved stability in service
- Long term performance: Enhanced by mobility of oile within the timber
- More environmentally friendly: Lower environmental impact compared to traditional creosote; compliant with modern safety standards. Can be used in applications such as play areas and parks.
- Clean and low-odor: Less odor and cleaner to handle than creosote-treated posts—easier and safer for workers.
- No Cribing: 5 years worth of evidence that horses do not crib
- Stable treatment: Reduces leaching, meaning the preservative stays in the wood longer, even in challenging conditions.
- Ideal for ground contact: Designed for in-ground applications such as fencing, livestock enclosures, and landscaping.
- Aesthetic appearance: Retains a natural wood tone for longer, improving visual appeal.
- Non-creosote alternative: A good choice where creosote use is restricted or not desired due to health, environmental, or regulatory concerns.
- Proven performance: Extensively tested and used across Europe in agricultural and infrastructure projects.
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Suitable for all applications

Due to the large selection of posts and strainers that Octowood produce, they can be used for many applications such livestock, equestrian, forestry, industrial or solar. In addition Octopost fencing is used for many types of animals such as deer, poultry, Otter and much more.
Octopost sizes available:
Please note the post width dimension is not the diameter measurement of the post. Please see drawing below:The following are the posts that are normally available in the UK. Other sizes available to order but please give plenty of notice in order for the posts to be produced.
*The Latin name for the species of Redwood timber grown by Octowood for the Octoposts is Pinus Sylvestris.
Why Octagonal?
This is a very common question and the reason is simple – transportation. The posts are more securely bundled due to the flat edge therefore they are less likely to split. Of course the advantage of having a flat surface makes stapling the posts easier.
Working safely with Octoposts
Creosote
Creosote posts requires safeguards when storing and suitable PPE is essential when handling creosote products. Please use the following link to access Octopost Safety Data Sheet Please refer to section 8 for more information on what protection is recommended. Should you require additional information please go the the HSE website.
Tanasote®
Tanasote®, has been developed as a high performance alternative to traditional Creosote treatment, without the requirements of PPE and additional safeguards.