I have a composite deck that has plaster stains and I’m stumped as to how to clean it. I tried the turbo nozzle and a 2% SH mix.
No luck, once the deck dried the stain was still there.
I’m stumped and I’m too intimidated as a noob to go post that in PWR as my first post.
@ProWindowCleaning I’m green to PW as well, but maybe you just needed more dwell time? I looked up products and the one specially made for composit decks wash was just sh and wetting agents. Maybe a combination of Elemonator and GG4? Im interested to see what someone else has to say. I am curious though how sh could affect was appears to be mineral deposits?
I get not wanting to post on pwr. They can be brutal! But just like here lots of knowledge.
Also, now that I’m pressure washing I don’t know why in the world I didn’t start sooner!
The homeowner was on site and informed me that “the painters spilled paint on the deck and if I can’t get it out he’s going to have them replace the deck”
Well, I wasn’t prepared for paint removal as I was told it was plaster… sooooo the painters get to pay for my time trying to remove the “plaster” and then they get to pay for a new composite deck.
However, I put enough time into that job and it’s going to end being covered by the painters insurance (insurance? sure)
I have dumped enough of my time and energy on that project and sent the invoice for my time. As years go on I know when to tap out, walk away, and send a bill.
Totally get where you’re coming from. Gotta know when to call it a day.
But for the sake of posterity, I’ve taken some time to answer your question:
That would be 2nd gen, then. The older style of composite decks (15+ years ago) was semi-porous and the maker of Trex got their pants sued off for selling it as a maintenance free, stain resistant decking material, when it was in fact quite the opposite. It can be a real nightmare to try and work with.
The new stuff is a fully encapsulated PVC product. Much nicer to clean and maintain.
The Sodium Hydroxide probably wouldn’t hurt it at all, and at this point, if the painters wanted to give it a shot with some hydroxide based paint stripper, they have nothing really to lose.