Lavatory sink

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Mr Lars

Well-known member
Joined
Mar 17, 2021
Posts
100
Location
Coleman, TX
Hello all, I imagine this topic has been covered a time or three, but my question is; what’s the best way to reverse the yellowing of the lavatory sink, and other plastic parts in older motor homes? TIA
 

NY_Dutch

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Joined
Nov 22, 2010
Posts
7,152
Location
Where our wheels take us!
I've had the longest lasting results by lightly scuffing the plastic and spraying it with a quality plastic paint like Krylon Fusion for Plastic. I have not tried that on a sink though, so I don't know how well it would hold up there.
 

Ex-Calif

Well-known member
Joined
May 15, 2020
Posts
1,869
I'm with Dutch. I've restored a number of classic cars and yellowing is really a chemical change over time as opposed to a stain.

The only time I've had real success on painting plastic and vinyl parts is to remove the item completely, do a complete and thorough surface prep, sometimes with media blasting and apply the coating. Restoration in place is a lot tougher in terms of surface prep.

Surface prep is +95% of the game in any surface restoration.
 

Gary RV_Wizard

Site Team
Joined
Feb 2, 2005
Posts
74,990
Location
At my Silver Springs FL home
What the others said. You can try wiping it with lacquer thinner or acetone, which removes a layer or two of the surface and might get down to unchanged color, but it's difficult to do neatly and evenly. Sanding & painting with something like Krylon Fusion is a better choice, even if you have to re-paint occasionally.
 
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