KDM are able to offer a 10 year warranty on their ribbed and smooth planed posts treated to UC4 (Use Class 4) and are individually marked. UC4 posts are posts that are in contact with ground or fresh water. Permanently exposed to wetting.

KDM products are not FSC certified, they are PEFC.

KDM recommend all wooden posts are annually retreated at ground level to maintain the product and protect the timber against fungal and insect attack.