How late can you apply a topper

5.0Black

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Hi Everyone,

I was genuinely curious about something, how late can you apply a topper like Gtechniq EXO? I know usually you apply a topper at the time of a ceramic coating, but I had a friend ask me if you could apply EXO a year or so later after a ceramic was put on (Gtechniq, CarPro etc). I know EXO states that you have 12-24 hours to apply to a ceramic, which is what I do, but I was curious if you could apply it later to an already treated car as long as you do a full wash and panel wipe/eraser or if you are kind of doomed and can only apply at the time of doing a ceramic? I am pretty sure the answer is no, or at best "do so at your own risk", but I wanted to see what you all thought.

Edit: I was curious if EXO can only be topped on a 9h ceramic or if it can be applied to a lighter coating like CQuartz UK?

Thanks,
Sean
 
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NastyGT500

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I personally don't like 'mixing' brands/manufactures.

If I were to do it, I would make sure the vehicle is clean, I would not use a panel wipe product on it. I'd be on the fence about claying it-it could mar the coating/finish, but I would most likely do a chemical/iron decon prior to applying it.

Gtechniq CSL (can EXO be applied months later?)

^^^that is the only post I could find with a quick search that says it is OK to do it on top of another Gtechniq coating.

Hope this helps!
 

5.0Black

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I personally don't like 'mixing' brands/manufactures.

If I were to do it, I would make sure the vehicle is clean, I would not use a panel wipe product on it. I'd be on the fence about claying it-it could mar the coating/finish, but I would most likely do a chemical/iron decon prior to applying it.

Gtechniq CSL (can EXO be applied months later?)

^^^that is the only post I could find with a quick search that says it is OK to do it on top of another Gtechniq coating.

Hope this helps!

Much appreciated. I will probably just let my friend know it is not the best idea, but if he wants to try then give CarPro Gliss a shot since he has CarPro on it currently.
 

NastyGT500

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Gliss could work:

Q. Can Gliss be applied over a previously coated car which was done a few months ago?

A. Yes

Q. Is there a time that you should not apply Gliss on top of a CQuartz coating?

A. There is a time at which GLISS is not going to bond as well to a weathered coating. The exact point at which that happens is impossible to say due to all the variables involved and the impossibility of testing each one. What I CAN say is that we tested it on top of a 2-month-old coating with good results and it seems to have bonded well. The prep we would recommend for an aged coating if you are not polishing is as follows:


1. Wash with CarPro Reset
2. Rinse
3. Decontaminate with CarPro Iron X
4. Rinse
5. Use CarPro Spotless (if needed)
6. Give one final wash again with CarPro Reset
7. Rinse and Dry
8. Wipe down with CarPro Eraser
9. Coat
 

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