I've been dealing with hard water spot on my windows for a while now. I tried the vinegar water solution, rubbing compound, ultimate compound, M105, M205..and the list goes on and on. These products are costly, really did nothing to get rid of the water spots but smear the windows and/or required a lot of effort for minimum results.



Today, with a help from various car detailing forums, I purchased a product that works. It's CHEAP, easy to use, very effective and my windows are looking super clean and fresh.

Product: Bar Keepers Friend
Cost $1.79 .. that's right.. for less than $2, you can get rid of all the water spots on your windows.



This product comes in a powder solution. All I did was dump some of the solution on a cup and mix some water to make a paste. Let it sit for like a min and take either a foam applicator or a microfiber towel to apply.



1. Clean the window
2. Wet the surface you want to apply the solution
3. Apply the paste solution with foam applicator or microfiber towel ( wear gloves and keep the solution away from plastic/rubber trim)


( you will hear and feel like your sanding the glass.. it's the product dissolving the hard water minerals )
4. (IMPORTANT) Wash the solution off with clean water and or glass cleaner with a MF towel.
5. Repeat on other windows if needed.

Quick DIY Video:


Enjoy.

 

Did you ever try straight, undiluted vinegar?

 

cheap offbrand no-streak glass cleaner works for me.

maybe im the only one who uses elbow grease?

$2-3 per bottle at walmart

 

I just clay bar mine while washing the car.

 

RainX with paper towel works great for water stains.

 

wish I would have seen this sooner. Was having the same problem and nothing seemed to fix the issue. Finally gave in and just bought Diamondite Glasswork Kit.... i'll try the Bar Keepers Friend and compare

 

I use Bar Keeper's Friend quite a bit in the kitchen and on aluminum bicycle rims.. I'm surprised to hear that it doesn't leave fine scratches on glass... I'd try it with a microfiber cloth on one of the junkers but I finally sold them all for scrap..