Calders & Grandidge

Calders & Grandidge is one of the oldest and most well respected names in the UK pressure treated timber sector. Operating from our 46 acre site in Boston, Lincolnshire, we have over 100 years experience providing creosoted timber poles, railway sleepers, gates and fencing. We are equipped with our own twin set of 36m creosote impregnation vessels, as well as 15m celcure high pressure treatment autoclaves. These resources enable us to treat large amount of timber quickly and efficiently, meaning we can get your products to you faster.

As holders of an ISO 9001 certificate, we are committed to ensuring only the finest quality goods and services are offered to our customers. Our 60 highly motivated and customer focused staff ensure this standard is maintained at all times. As members of the WWF 95+ Group, and holders of both FSC Chain of Custody and ISO 14001 certificates, we take our CSR and environmental impact very seriously.