Because 80% of my work since I started my business has been recurring commercial-storefront and restaurants, I have not had to deal with as much of the difficult part of the job of window cleaning. In particular, I have had poor success with hard water removal in my past 7 years, so I’m starting this thread with lots of ?'s feel free to chime in on what you know about and skip what you don’t. My biggest frustration is that many people I ask for help are more concerned about liability, so that I can’t get a straight answer on an actual working process:
[B]1) CC550 -[/B] Was told by my former boss when working for him to use it (7 years ago) and turned some residential windows purple. The worst part is I had masonry on the window I assumed it would soften. It didn’t soften the masonry, Now there are normal spots in the glass where the cement was and the main window is purple.
~ I will never use this product again as I feel is too dangerous, but…
~ I still have this client in my business, the glass is still purple. Can I remove this purple tin etch hazing with my new JFlint machine?
[B]2) SafeRestore/OneRestore -[/B] I have confusion about how safe this is and how to use it, most videos show people slinging it around like it’s tap-water, which I don’t believe i’m ever going to do. I tried being careful and using a microfiber towel to apply it and it seemed to do more harm to the glass than when I sprayed it on, which I assume is why people say never to let the product dry on the glass. When I broke down and sprayed it on the next pane as I saw people on youtube do it, and let it dwell for only 30 seconds before cleaning it off, I found a bit of condensation between the panes near where I sprayed the product. I assume the product got behind the glass and ruined the seal (I had also sprayed the frames as they were had mineral deposits, too).
~ People always say not to let it dry. Why should you not let it dry? It seems like it would be more damaging wet/active.
~ If it’s so easy to ruin seals, why use it in the manner people do on the instructional videos you find on youtube?
~ Are my problems with this product a common occurrence?
[B]3) A1 Mineral Deposit Remover -[/B] Didn’t seem to do as good of a job as my steel wool and left a messier cleanup.
~ Can I use this with my Jflint, just so I don’t have to throw it out unused?
[B]4) Nano Ultra Stain Remover -[/B] Seemed to be the same product as A1 but with a different solvent in it, but I couldn’t use it in similar circumstances. A1 worked fine on my favorite sprinkler-soaked mirror-coated windows, but when I tested the Nano-Ultra in a small corner, it left a bit of a haze.
~ the hydrophilic coating didn’t work well-enough to justify applying it again.
[B]5) Steel Wool (0000) -[/B] Works the best for me, but takes forever
[B]6) Razor Blade 6" -[/B] Works good to get the grittiest mineral deposits, but I have to switch to 0000 steel wool to finish the job every time. You go thru a lot of blades, and I have one customer with mirror-coated glass that gets nailed by their sprinklers on the regular. The razor blade has left a scratch or two on some of the worst panes that required me to be aggressive.
[B]7) J-Flint System.[/B] Just bought this on Thursday, received in the mail today, I’ll be testing this machine this week to see if it will be my hard-water savior or not.