I worked for a company last summer that had a huge system in a truck
They used a lot of bleach, but I don't know what else (I didn't PW for them)
I assumed it was TSP/Soap
I use a mixture of JoMax(Zinsser product)+Clorox sprayed on home, then after 15 min. set time use pressure washer with various tips to clean it off, well.
Not trying to hijack the thread or anything but I did a search and couldn't find what to use if you want to wash a porch and not paint.
What doesn't ruin the sheen?
Bill really must not be feeling well. He'd usually be on a tear around here by now.
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