Thad
WCR Sales & Founder PWRA
Thad maybe you could tell me something about it, I'm just a flatworker and I'm not interested in doing windows only or any other windows. I'm thinking that I could spray all the windows first with the powerwasher and then it would only need a little DI?
Yeah, pre-cleaning with the pw will help a lot.
Then brush them down and rinse with the wfp and pure water. Whether you need a RO/DI or just a DI depends on how high your local TDS is.