Chris, I am wanting something to "add" to our roof cleaning mix after we spray our existing mix down. We will shoot our regular love roof mix, then while that is drying on the roof (we don't rinse), I want to downstream something "extra" for an upgrade with the PW so it is quick and easy. So the 2% SH would be out. I was thinking Copper Sulfate, but would you recommend zinc sulfate?
The reason we won't add our "upgrade" to the mix is that we premix our love and we mix up 200 gal of mix at one time to use for both houses and roofs. If we added it in our mix, it would kill the rest of our love. I also want it to be an extra process to justify the addon service.