Green deck boards

Wood Restoration
1

I read a few threads on this issue, thought I’d check with the veteran wood cleaners on this.

More than a few times I end up with this after 1500psi basic clean that the customer requested.

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It’s weird, there wasn’t any algae growth on that section, just greyed wood. How would you approach this, chem wise? BTW downstreaming SH didn’t phase it.

2

Nothing I’ve tried will touch it, it’s embedded beneath the surface of the wood. It looks much better when dry

3

That’s what the customer said as well. I don’t suppose metasilicate would do anything?

4

That is pressure treated wood and what you are seeing is the copper treatment that is in the wood itself.

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