I’ve not noticed much mold myself on the decks that have already had TWP on them.
I just finished one that had been stained two different times with TWP and they wanted to stick with it again. It’s the one @marinegrunt gave me some tips on cleaning.
It’s the one I asked for some help here:
https://pressurewashingresource.com/community/t/sodium-hydroxide-and-metal-spindles-on-a-deck/
I’ll swing back by the job site and get an “after” pic and post it. It turned out really nice.
