The Coffee Shop

[High_Plains_Drifter]

I presumed it was wood.

In this case, get some granulated chlorine from a swimming pool supply place.
Scrub that on. That is how we treated our pool decks at the training center.

Now that's a good idea. Yeah anything to inhibit the growth of that mold. I usually only have to power wash it every 2 or 3 years, but with all the rain this year and it being almost constantly wet, I had to power wash it twice.

The chlorine is an excellent idea.