Hard water/scaling

Residential
1

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Anyone know the fastest/easiest way to clean this off? Huge house lots of glass covered with this hard water or scaling very difficult to remove.

2

It can be hit or miss depending on the chemistry of the stain…

One Restore has worked well for me (Diluted 1 part to 3 parts water) and if that still doesn’t work polishing with a cerium oxide slurry or Mr. Hardwater with a makita has worked well.

I have run into some stains that even polishing couldn’t fix.

GANA has some guides on restoration if its something you want to learn about.

3

I use barkeeper’s friend and white Xero pads. Takes some elbow grease, but if you take the bar keepers friend and apply it to the window and let it sit for a bit and then give it a scrub you’ll have okay results.

I have only done a few windows at a time on a couple jobs, but next time I have a larger job that involves this I have a plan.

  1. I’m going to mix up about 50/50 bar keepers friend and water in a chemical sprayer so that I can quickly cover several windows in an even coat

  2. I’m going to get a palm sander or a drill that I can put a Xero scrubber (white 3m pad) say that I can save my arms and get good scrubbing power.

I think that this would work very well, but I haven’t had a chance to try it yet.