Can heat treatment repair damaged paintwork?

I have a two-year-old blue metallic Volkswagen Golf Plus, which has developed whitish patches on the bodywork. My Volkswagen dealer tells me that these patches are caused by hand or sun cream touching the car, causing the glaze to be damaged. They say they can correct this using some form of heat. Have you ever heard of this happening?

Asked on 27 October 2012 by MR, Sherborne, Dorset.

Answered by Honest John
Yes. Heat treatment of the clearcoat lacquer can also remove the residual effect of birdlime. Experiments by Autoglym revealed that the damage to clearcoat by birdlime is caused by the difference in surface temperature between the covered paint and the exposed paint.
Similar questions
I have a 2011 Peugeot 508 SW. The paint work is still in good condition and has a fair amount of shine still. I'd really like to enhance the shine, bringing it as close as I could back to its original...
I will be taking delivery of my new Kia Cee'd soon, which is finished in metallic black. Can you tell me which polishes I should use and how often? Also will seek your website recommendation for GAP insurance...
I have just ordered a new Jaguar F-Type in red. Would you recommend the extra protective polymer coating at £500?
Related models
Decent fuel economy across the range. Excellent standard and optional equipment including a self-park system.
 

Ask Honest John

Value my car