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52 | Sector Focus: Preservatives & Fire Retardants


SUMMARY


■ The development, production and use of wood preservatives is regulated in the EU under the BPR


■ VACSOL Aqua 6118 and TANASOTE S40 have BPR authorisation


■ Investment in life cycle analysis is critical


■ LCA results show that TANASOTE S40 treated utility poles have low environmental impact


INNOVATION FOR THE FUTURE OF WOOD


Andy Hodge, marketing director at Lonza Wood Protection, explains why timber treatments need to evolve


Currently the WPA and the TTF are engaging in a supply chain education programme that shines a spotlight on the specification and supply of timber treated products to the correct Use Class. We fully support this campaign as awareness of Use Classes is crucial to protecting the long-term reputation of timber. However, at the same time we are embarking on our own education programme, focusing upon the need for the timber treatment market to evolve and work with specifiers to help ensure timber is the ‘go to’ construction material of the future.


Like any other product, treated timber needs to evolve with changes in the market place. Through insight we know that specifiers are increasingly looking for treatments that not only provide the very best long-term protection, but are designed with clear consideration to reducing the overall embodied carbon of a project. At Lonza Wood Protection we have a dedicated research and development team who look at how our product portfolio can continue to enhance the durability of wood as a sustainable resource. The key considerations


of any product development are regulatory controls, future-proofing, comparable costing and life-cycle assessment.


Utility poles LCA - normalised impacts 0.35


0.30 0.25 0.20 0.15 0.10 0.05 0.00


Ecosystems Human health


Cast concrete pole Fibreglass polyester pole Steel pole


Above: Utility poles life cycle analysis TTJ | May/June 2021 | www.ttjonline.com Resources


Fibreglass epoxy pole Spun concrete pole Wooden pole - with Tanasote S40


Total


A FOCUS ON REGULATORY CONTROLS The development, production and use of wood preservation products is regulated in the EU under the Biocidal Products Regulation No 528/2012 (BPR) foreseeing a high protection level. BPR aims to protect human and animal health as well as the environment, and the authorisation of biocidal products is a two- step process. Firstly, all active substances contained in a product have to be approved at EU level, following assessment of hazardous properties and possible risks. In the second step, biocidal products are evaluated before being authorised.


At Lonza we commit to obtaining full BPR authorisation for products that we are planning to launch to market. This process is a substantial investment and involves passing stringent risk assessments, as well as generating extensive data and studies to prove that the wood preservative is effective against wood destroying fungi and/or insects. The BPR requires data on the possible exposure and toxicity to humans such as reproduction toxicity, carcinogenicity, or endocrine disruption etc, as well as data on environmental impacts such as accumulation in soil or ecological toxicity. Two recent Lonza developed and manufactured products that have gained BPR authorisation are VACSOL Aqua 6118, our new low-pressure preservative product, and TANASOTE S40, a modern oil-based wood


(per European person emission eqivalent)


Normalised impacts


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