Hi everyone! This is my first post although I’ve been researching on this forum for the past 5 months. A lot of great info so thank you to all who post on here. I just purchased a general pump hammerhead 20in surface cleaner. On the very first job I got lots of lines on the driveway. Not lines from going to fast but straight lines as if its cleaning more on the sides than in the middle. I’ve read a lot on here about this issue but was hoping I could give some specifics and somebody point me in the right direction to getting rid of them.
I’m running a 3500 psi 4gpm machine. The tips on the surface cleaner are 2502s. When I pressure washed the driveway I both post treated and pre treated the driveway with a house wash mix. I used an x jet to put the chemicals down with straight 12.5 sh and some ecofresh wash. I used beige proportioner so I believe around 1.2% bleach was sitting on the actual concrete. Like I said its a brand new surface cleaner.
Do I need to use different tips. Maybe a 2503? What else is weird is that there was some concrete in back that was clearly newer and when I went over that it left zero lines and the sidewalk had zero lines as well so its like some concrete it was streaking and other concrete it wasn’t. This really isn’t acceptable work in my opinion so I’m hoping somebody can give me some direction. Sorry for the long post. Just trying to give as much information as possible. Thanks for you help!