I had a ceramic coating done in April and recently noticed these water spots on the hood and sides of my 997.1 C2S
i wash the car using Griots products about every 2 weeks with water from a hose and the 2 bucket method.
I should also mention that the car is kept outside as I don’t own a garage.
Thanks

are you parking near a water sprinkler? other possibility is your car is getting a lot of dew collecting on the surface from the ceramic coating causing a lot of beading which then sits and bakes in the sun

not near a sprinkler but between dew and the intense rain recently that could be it . Any thoughts on how to remove the spots ?

that's a cut and buff job. It is hard to get these hard water spots off. Do you have an orbital buffer? Griots makes a good one. I have their stuff.

I would try two methods to remove those spots:

1) A product specifically designed to remove water spots from a ceramic coating. CarPro "Spotless" is one such product. It will most likely remove the spots without any undue abrasiveness that could jeopardize the ceramic finish. Here's a link to it:

https://www.carpro-us.com/deep-clean...er-500ml-17oz/

2) If they are too stubborn and can't be fully removed with the CarPro product above, I would try using P21S Paintwork Cleanser. It is a low-abrasive solution that will remove those spots, and will not harm the ceramic finish. Here's a link to that product:


I definitely would not use a machine to remove those spots, and particularly not a machine with any form of an abrasive cleaner.

Good luck with the process.

After washing, are you drying? Use a leaf blower to get most off then use a microfiber and beadmaker to finish the drying process.

As for your current setup, you might just need to do a quick buff with something like Sonax perfect finish. But thatll likely remove your ceramic coating....

Do they come off and are just sitting on top of thr ceramic? They should. If they've gotten down theiugh the ceramic, then the ceramic product used wasn't very good and I'd take it back to the place you had do it for correction. If they just keep reoccuring but are different each time it's due to the car being outside all the time. A clay bar and detail spray as a lubricant should get them off the top of they're on and not in the ceramic.

thanks this is very helpful !

ive tried washing it again but probably need a specialized remover . I’ve heard a vinegar and distilled water mix would work too

yup definitely drying but only with a microfiber towel. Leaf blower I have I’m just being lazy 😤

Ceramic coatings are great at beading and but this also creates the issue of water spots if the beads are left to dry on the paint. Anytime that car gets wet it needs to be dried shortly after. Try one of the water spot removers mentioned above, but if it's etched into the clearcoat you will need to polish and reapply the coating.

that's tough given that when it rains I'd have to duck outside to dry it

I would talk to that creamic coating guy, ask him why it did that.

The reason it does that is because of the mineral content in the water droplets. The ceramic finish is hydrophobic which causes the water to bead more. When the water in each of the beads evaporates, the minerals are left behind forming the spotting.

The same thing would happen if the finish had been waxed or treated with a polymer sealant.

Can’t tell for sure but it looks like the car is black. If so, I don’t care what you put on it to shed water it’s going to get spotted if you leave it outside all the time. Black is beautiful but it hides nothing. I’d recommend getting a cover for it unless you want to buff it once a week.