Removing water stains from LC windows, this works great! (1 Viewer)

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Joined
Apr 10, 2013
Threads
5
Messages
27
I was excited to find a nice 2015 LC from Florida and was super excited that there was no rust anywhere. However, while cleaning it up I realized that I had water deposits and stains on all of the windows. This condition was particularly severe on the right side and rear windows.

My initial thought after a good washing was that a clay bar would remove this--it did nothing. I tried several normal glass cleaners and still no improvement. I added the use of a magic eraser while using one of the glass cleaners--no improvement on the water stains, but my everything else about my windows looked great. For hard baked on tree sap and the like we sometimes use denatured alcohol, so I gave this a try--still no improvement with the water stains. I tried the magic eraser again with the denatured, no improvement. I spoke with folks where I work and they recommended using CLR, letting it sit for about 5 minutes and then using whatever I desired within reason to scrub the surface. I did just that with a micro-fiber pad and a magic eraser. This combination made no headway.

I was down to a few options--0000 steel wool, Original Bon Ami 1886 glass cleaner, or possibly some other chemical cleaner/polisher. I spoke with several friends who are hardcore about detailing cars. None of them had a recommendation about removing this, but one of them highly recommended Chemical Guys as having some wonderful detailing products.

I took a look at Chemical Guys, watched their videos on this topic and figured that I was running out of options and it appeared that they had a solution... I was prepared to try either the Original Bon Ami or the 0000 steel wool, but figured I would have a go with a Chemical Guys product.

I purchased Chemical Guys, 16oz, Water Spot Rx Hard Water Sport Remover for glass and windows. Their video shows a preference of using this product with a random orbital polisher. I don't have one of these so I used a micro-fiber pad instead. I applied the Water Sport Rx remover on the pad, spread it across the glass and began scrubbing it up and down, side to side and in circular motions. In a matter of minutes I realized that I could tell where the spotting had been removed and where it had not been removed. The was pad was smooth where it was clean and slightly rough/catching where it was not. I continued scrubbing for about five minutes and it was clear that the product was spent. Using a dry micro-fiber towel I removed the product. I noticed that almost all of the spotting was gone, but there were a couple of areas that I had not scrubbed quite as much. I continued with a second run then a third. My rear window which was really bad with spotting was absolutely clean. I stood there totally amazed, while looking at it in different angles of light--it is clean.

A few things: Note, that the water spotting had a bit of a calcium surface buildup earlier on and at this later point at which I turned to the Chemical Guys product it appeared to be more of a stain--not felt by running one's fingers over it. Two, I have no affiliation with Chemical Guys what-so-ever, having never heard of them before this purchase. Three, I purchased the product on Amazon which was about as easy as it gets. Four, I was prepared to see this product fail and out of desperation ready to move on to the Bon Ami and possibly the 0000 steel wool. I am guessing that many other auto detailing product companies make a product that works every bit as well as this, but I have not tried them.

In terms of auto finish care I normally use products from Zymol, Griots and Meguires.

I hope that this helps those who are need of a solution to this, very strange to me, glass issue.
 
Powdered citric acid also does a great job.
 
Hankinid, thanks for that input. I could have used this info a couple of days ago, but as it is, I am pleased with the results. I will keep this in mind in the future.
 
I've seen this in a lot of cars from my area - comes from sprinkler water overspray drying on the car, leaving behind the deposits from whatever is in the well water.

My solution has been to use some pickle juice (probably could use vinegar, but I've not tried). Put it on generously and let it sit for a bit before rinsing. If it's bad (was on my daughters pearl white Lexus), might have to do this several times. I know this is a recommendation for a mild acid rinse, but it worked for us with seemingly no damage.

On windows I have also used a single sided razor. You have to put some pressure on the blade ends so as to form a very shallow U shape. Helps keep the corners of the razor from scratching the glass.

Follow up with a good Dawn dish soap washing then waxing/sealant. Then keep the car away from sprinkler heads that water the car more than the lawn.
 
Put a towel soaked in white vinegar on your window for 10 min then wash window as normal. This woks better that just spraying vinegar on the window and having it run down before it gets a chance to work on the deposits.
 
It is good to have a sense of the cause as I have never seen anything quite like this. The vinegar soaking solution is intriguing. I still have to clean up all the windows and the mirrors so will give this a try as well.
 
Start out with a hand towel and it needs to be really moist with the vinegar. Depending on deposit it may take several applications. As simple as it sounds it doesn't make big $ for companies so it is played down
 
RET2, thanks I will do this on the mirrors and windshield first. Folks mentioned trying white vinegar, but with the severe stains commented that it did not work. To my knowledge they did only spread it on or sprayed it--they did not do what you describe. I will give this a go. My solution works great, but one must still scrub it.
 
For wiper scratches on the window cerium oxide works nicely and polishes the glass like new.
 
RET2, thanks I will do this on the mirrors and windshield first. Folks mentioned trying white vinegar, but with the severe stains commented that it did not work. To my knowledge they did only spread it on or sprayed it--they did not do what you describe. I will give this a go. My solution works great, but one must still scrub it.

Spraying works on one time spots but to dissolve the repeated buildup they must be soaked. You can also use flat paper towels as they take less vinegar to soak and keep wet. Vinegar also works on build up on shower heads and faucets.
 
For wiper scratches on the window cerium oxide works nicely and polishes the glass like new.
^This

I talked to a glass repair friend last week- they do clean up & repair on high end buildings with coated glass, auto glass as well. When I asked him what did he suggest for removing calcified waterspots from glass- he said Cerium Oxide and 0000 steel wool. Specifically said single use on the steel wool, and if you drop it- toss it and use new, also not to use scotch brite pad or other types of abrasive pad.
 

Users who are viewing this thread

Back
Top Bottom