Green stain on PT lumber ?

[hasco]

I notice on my fresh Pressure treated Deck planks some "Greening" on a couple of boards. Will it sand off or disappear on it own . Wondering on thoughts from others that encountered it.

 

[mike93lx]

That's the treatment chemicals. It will Grey with time

 

[Nobody-named-Olli]

https://www.eastcoastfencing.com/news/why-is-there-green-marks-on-pressure-treated-timber

Kind regards,
Olli

 

[nadogail]

I use a Copper Napthate solution to protect wooden fence materials from termites, it leaves a green stain, i then paint those stained boards with Kilz2 followed by a coat of paint.

 

[BurtEggley]

wear a mask if you cut it. The chemicals are toxic to humans too. Keep pets and children away too.