> ## 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).

# How long does a WoodBlocX structure last?

![](https://storage.crisp.chat/users/helpdesk/website/99e85b04a8366000/woodblocx-garden_1bjn067.jpg)

WoodBlocX is pressure treated with Wolmanit CX, a water-based preservative which fixes in the cells of the timber when it dries - this means that **WoodBlocX structures should last for 15 years** and possibly longer when our simple installation guidelines are followed! 

We do always [recommend using a liner](/en/article/do-i-need-a-liner-in-my-raised-beds-8qu7k7/) and a [good quality soil](/en/article/what-type-of-soil-should-i-use-to-fill-my-raised-bed-1oxgr8t/). In very rare circumstances BlocX can be affected by Brown rot, which can be present naturally in soil and affects the heartwood of the timber. We cannot always warrant claims against this type of rot.