Cleaning discoloured plastic

[sgrimshaw]

We have some plastic post caps which have weathered badly.

Any suggestions what I can try to clean them up with?

TIA

[trickywoo]

HG UPVC cleaner or similar.

Might be fubar though.

[steveo3002]

replace or dust over with some plastic paint

[RustyNissanPrairie]

Owatrol, equally fantastic on black bumper plastics

https://www.rawlinspaints.com/products/12656-owatr...

[OutInTheShed]

Solvent cleaner is a good option, screwfix sell upvc solvent cleaner fairly cheap. Or you could try acetone or MEK if you have it.

Alternatively, wet sanding may be quickest.

[steveo3002]

RustyNissanPrairie said:

Owatrol, equally fantastic on black bumper plastics

https://www.rawlinspaints.com/products/12656-owatr...

does it take off the brown staining ?

[SpeedBash]

I'd give the Pink Stuff paste a try.

[CubanPete]

I'd paint them or replace.

[RustyNissanPrairie]

steveo3002 said:

RustyNissanPrairie said:

Owatrol, equally fantastic on black bumper plastics

https://www.rawlinspaints.com/products/12656-owatr...

does it take off the brown staining ?

Scotchbrite them clean then wipe some Polytrol on them

[Tighnamara]

Used this on PVC windows for rust stains.

https://www.powertoolsdirect.com/soudal-pvcu-cream...

[wiggy001]

sgrimshaw said:

We have some plastic post caps which have weathered badly.

Any suggestions what I can try to clean them up with?

TIA

https://amzn.eu/d/0j2DwucL