Can you use additional preservatives after tanalisation?

Yes, in certain situations, additional preservatives can be used after tanalisation to provide enhanced protection against wood-destroying organisms. However, it is important to note that tanalised timber is already treated with preservatives during the tanalisation process, which effectively protects it against decay, fungi, and insects. The need for additional preservatives depends on several factors, including the specific requirements and conditions of the application.

Here are a few scenarios where additional preservatives may be considered:

1. Severe Exposure Conditions: If the tanalised timber is exposed to extremely harsh environments or weather conditions, such as prolonged contact with water or soil, or in regions with high termite activity, additional preservatives may be necessary to ensure maximum protection. These preservatives can provide an extra layer of defence against moisture, rot, and insects, ensuring the longevity of the timber.

2. Specific Applications: In certain specialised applications, such as marine environments or agricultural structures, additional preservatives tailored to specific hazards may be recommended. These preservatives can offer targeted protection against organisms that pose a particular risk in those environments.

3. Re-Treatment: Over time, the effectiveness of the preservatives used during tanalisation may diminish due to exposure to the elements or other factors. In such cases, re-treatment with additional preservatives can help prolong the life of the timber by replenishing the protective properties.

4. Regulatory Requirements: Some countries or regions may have specific regulations regarding the use of preservatives in certain wood applications. These regulations may necessitate the use of additional preservatives to meet the required standards.

Before applying any additional preservatives, it is crucial to consult with a professional or refer to the recommendations of the tanalised timber manufacturer. The compatibility and effectiveness of additional preservatives should be considered to avoid potential adverse reactions or compromising the original tanalisation treatment. Proper handling and safety precautions must also be followed when working with preservatives.