Advice on a commercial dyed concrete washing job

[Fat-one]

Wash Stained Wood Siding & Painted Trim

I’m going to make a video of the five or six test bottles I always have when I show up to a new house. When in doubt a test bottle of your mix will answer 99% of your questions when it comes to stuff like this.

Wash Stained Wood Siding & Painted Trim

That should just be your regular mix. In the SH test bottle it’s a 2% mix. Twice as strong as I normally use to see if any problems arise. Test bottles: SH mix F9 Purple Power or Zep Citrus Degreaser EBC Weak oxalic mix.