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UC4 Treatment / 15 year warranty – Fencing

75-100mm x 1.65m / 1.8m / 2.4m / 2.7m / 3.0m
100-125mm x 1.65m / 1.8m / 2.1m / 2.4m
125-150mm x 2.1m / 2.4m / 2.7m / 3.0m
150-175mm x 2.1m / 2.4m / 2.7m / 3.0m
175-200mm x 2.1m / 2.4m / 3.0m


KDM are able to offer a full range of UC4 treated Cundy and Machine Round Poles with a 15 year treatment warranty.

This warranty is achieved by producing our fencing products from Pine softwood (Redwood – species Pinus Sylvestris) which has been either air dried/seasoned or kiln dried to a moisture content of 28% or below.

Our slow grown Northern European Pine is the ideal species for this pressure treatment process, allowing the treatment to penetrate deep into cells of the wood and achieve the criteria set within the BS8417 (British Standard) treatment guidelines for the 15 year warranty.

Critical to our range of UC4 treated products is our partnership with treatment experts, PTG Treatments Ltd, who are one of the UK’s leading independent treatment specialists and who will continue to play a big role in the development of our UC4 market.

The treatment process at PTG’s Hull treatment facility requires the use of a dedicated tank, for the high strength solution which is for the sole use of KDM’s UC4 poles. Every batch is carefully checked for a moisture content of 28% or below and detailed records are kept for every treatment cycle as part of the quality documented procedure.

PTG use AC500 Treatment from one of the most respected chemical suppliers in the world, OSmose. The PTG treatment process is regularly audited by Osmose to analyse solution strengths and test chemical loadings and uptakes. Each piece is individually branded for traceability so that customers can be sure they know where their timber comes from.

KDM welcome your enquiries for UC4 15 year Warranty material.

Please call us on 01473 276900 or email