The approval and uses of creosote as a wood preservative were recently reviewed under the EU Biocidal Products Regulation.
The EU review process, which was managed by the European Chemicals Agency (ECHA), resulted in a renewal of approval for creosote that was limited in its scope due to significant concerns, including the carcinogenic potential for humans. This means there is a cancer risk associated with using creosote.
Permitted uses were restricted to industrial vacuum pressure impregnation of wood used for railway sleepers, electricity poles and telecommunications poles only.
The renewal Regulation (Regulation (EU) 2022/1950) came into force on 1 November 2022 and stipulates that from 30 April 2023 only railway sleepers or utility poles for electricity or telecommunications treated with creosote may be placed on the market in EU Member States.
A national derogation to allow for placing on the Irish market of creosote treated agricultural and equine fencing beyond 30 April 2023 is not possible under the regulatory framework.
It should be noted that timber already treated with creosote and sold to end users e.g. farmers before 30 April 2023, can be used after that date.
Details of the alternative wood preservative products authorised for use in Ireland can be found on my Department’s website (www.pcs.agriculture.gov.ie).
There are also a number of timber preservatives that are permitted to be used to treat timber fence posts in accordance with the Irish National Standard IS 436: Farm fencing - Timber post and wire -Requirements.
