I’ve since learnt that (unless it’s changed and the info is out of date or wrong) that Accoya wood is grown in NZ & treated in the Netherlands. So the transport carbon footprint isn’t great. It’s then consequently expensive.
“The downside to this material is that while the trees are grown in New Zealand and the acetylisation process occurs in The Netherlands, it will always be expensive. The raw timber costs three times as much as our standard hardwoods.”
The geographic growing and processing isn’t mentioned on the Accoya website that does cover a lot of other good environmental aspects of Accoya: