> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.woodblocx.co.uk/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Is WoodBlocX wood treated?

WoodBlocX timber is **pressure-treated with a water-based preservative** (Wolmanit CX). Our timber is dried in a vacuum and then pressurised to 300 psi. If you cut a piece of WoodBlocX in half you will find that the preservative has penetrated virtually 100% of the sapwood. 

This makes our structures durable and long-lasting for **up to 15 years**! WoodBlocX does not require any annual maintenance or extra surface treatments.

To maximise the lifespan of your WoodBlocX structure, we recommend [installing a liner](/en/article/do-i-need-a-liner-in-my-raised-beds-8qu7k7/).


![](https://storage.crisp.chat/users/helpdesk/website/99e85b04a8366000/hopton-hall-hq-298-1_1420fix.jpg)