| [GMCnet] Re: Yellowed interior shell [message #363846 is a reply to message #363840] |
Thu, 06 May 2021 09:48   |
sgltrac
Messages: 2797
Registered: April 2011
Karma:
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Senior Member |
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Sanding should not be necessary unless you need to correct surface flaws.
Scrub the plastics with a strong water based cleaner and red scotchbrite
pads, rinse well with water, dry and spray.
Sully
Bellevue wa
On Thu, May 6, 2021 at 7:14 AM Mark Sawyer wrote:
> I've used SEM plastic paint in the past with good results...
>
> I believe they make an adhesion promoter as well that you can wipe or
> spray on the plastic before applying paint that will kind soften up the
> plastic
> which apparently helps the paint stick...
>
> I would consider this a mandatory step, unless you want to do the whole
> panel again when it starts to flake off in a few months...
>
> Also, before using the adhesion promoter, you need to clean the heck out
> of the plastic... Any silicone (from armor all or whatever), grease, oil
> etc. and the paint will flake. I believe SEM makes a product for this too.
>
> Painting plastic can be hit or miss... But I've found if you follow the
> whole system for whatever brand you choose, (Cleaner, Prep, Adhesion
> Promoter, etc.) you have the best chance of the paint not flaking down the
> road....
>
>
> --
> Mark S. '73 Painted Desert,
> Manny 1 Ton Front End,
> Howell Injection,
> Leigh Harrison 4bag and Rear Brakes,
> Fort Worth, TX
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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