Wood rot threshold for chemically-treated wood

[David Lam]

Dear all

20% moisture content is a typical value to use when assessing wood rot.

But wood that has been protected using chemicals will presumably allow increased moisture content before the onset of rot.
I can't find any information online to suggest a suitable moisture content to use when assessing treated wood.

Has anyone looked into this before please?
Thank you

David

[Daniel]

Hi David,

I'm not aware of any limit values for treated would in standards. Normally the information is more like: if you exceed the normal limit value you need chemical protection.

However, 20 % is pretty conservative. The WTA guideline 6-8 allows clearly higher values depending on the temperature (at 0°C for example up to 26 %). Maybe it helps more to use such temperature dependent or even transient limit models. Our rot predicition post processore will also be available next year.

best regards
Daniel

[David Lam]

Thanks Daniel
Looking forwards to the rot tool.