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Offline Joel@ZAS

  • Joined: Nov 2010

  • Location: Sydney
Recently we had a situation involving Opti-Coat Pro, a 2010 jet black Nissan GTR and concrete dust.

The thermoplastic paint was corrected and decontaminated, and a layer of Opti-Coat was applied to the paintwork. The coating was allowed the 12 hour curing time and then due to poor weather in Victoria, experienced a week or so of rain and cold conditions immediately after while the clear coating is still attempting to cross link and harden.

The combination of wet weather and excessive concrete dust in the inner city car park created severe water spotting on the Optimum clear coat. This is what the client was greeted with.


Initially it was thought that the Optimum Coating had etched, due to a combination of Opti-Coat not being compatible with the thermoplastic paint, and the highly alkaline concrete dust on the fresh coating.

We can proudly report that this was not the case!

The moisture and concrete dust did create the marks and they had bonded to the coating, however they did not penetrate the Optimum Coating! As suggested, the client used a non abrasive paint cleaner (in this case Prima Amigo) and the watermarks were removed from the coating completely.

The Opti-Coat service is sold with a 5 year warranty, or a lifetime warranty for vehicles maintained under the Optimum Maintenance Plan. This is a perfect example of why clients should consider the Optimum Maintenance Plan and why it exists. Contamination such as watermarks from concrete dust can occur. Annual paint decontamination by a professional can also remove it.

This was the end result. Enjoy the photos of this stunning vehicle






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