The boss of my current coating does not allow the user to use any wax as it will spoil the coating surface and thus the water not able to bead up and slip away from surface easily anymore. This is the main issue.
I think the real thinking behind your boss not allowing any wax is because its not possible to control what kind of wax goes on the coating. If a coating that gets affected by a pure LSP carnauba wax with no cleaning ability is not worth the money being paid for (sorry to be blunt). If the coating cannot resist the contents of a pure LSP carnauba wax I don't know what to say lah. I have never seen a LSP pure carnauba wax which doesn't bead and sheet off the car.
The main reason coating detailers do not allow any thing to go on top of the coating is because they cannot control what is being put on top of the coating. Not all customers know how to differentiate between a wax, cleaner wax, AIO, polish with abrasives or polish with chemical cleaners, Polish, AIO with carnauba, polish with carnauba, LSP carnauba etc etc. So its easier for them to just put a blanket clause and say nothing on the coating as it may affect the coating. Not to mention products are some times called polish when they are in actual fact LSP products.
So as I said the best way to minimize water marks is to wash the car often and to have a layer of carnauba wax on the car or coating as a sacrificial layer. If that cannot be done for your coating then you will have to send the car back to the detailer for regular maintenance. Which basically boils down to regular maintenance, so as i said coatings have been marketed the wrong way, its not really easier maintenance, its more of a sacrificial layer.
Basically there is no short cut in detailing if there was a holy grail of coatings the manufacturer will be making big bucks and everyone will know about it including the sifus here and Megs, Opti, TW and all will close shop. Most coatings are over hyped and marketed believe me. But there are some really good coatings which are expensive and good but for me I still find a good coating with carnauba still the best way to go. Think about it even the latest really hard glass like ceramic clear coats still get water marks so does our glass and chrome metal in our toilets and cars. There's no running away from it, just minimizing it and the best way is through regular maintenance and a layer of wax or polymer slick oil (e.g. QD or spray wax) which has to be regularly topped up as its is worn and washed away.
But since this is a PPS thread, i have heard some good and some not so good reviews. For me since I'm a DIY detailer, I speak only from my experience and as always in detailing you have to slowly find what suits you best then keep on using it.
But many people do find it
very very hard to swallow when I recommend a coating and carnauba wax (or at least a spray wax) for maintenance. Its always "Then why I use a coating if I need to wax?.............." Well I believe I have answered that question in the other thread which I posted.
