Tough crowd here! 
Keep in mind, if @PW.SP is from Spain, then English is likely his second language.
So he’s trying to learn about pressure washing from all of us yahoos in a second language! Imagine trying to learn about a new thing in a foreign language. Yikes!
I’ve had a hard enough time following some of you…and English is my first language. 
Nothing but love to all of you! 
Thank you very much for the support! 
In my experience you want anywhere from 3-5% final solution on the surface for any stone-like material. It’s porous, and the dirt and microbes really get in there and hunker down. Difficult to get out sometimes.
Thank you very much, I’m right on the way to the powerwashing renting shop, I will be powerwashing it in a couple hours 
I hope it goes well:crossed_fingers:
You can do it. Just apply what you’ve learnt here.
Looking forward to your before and after pics 
Thanks, I tried today but powerwashed didn’t fit in my car, I will come back on Monday with my mom’s car which is bigger and do it then.
