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Old 11-27-2022, 09:16 PM   #1
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Stain Removal/Covering On White UPVC

With all the incredible knowledge here, whilst this is not RV specific related hoping someone might be able to give me a solution.

So to all you decor, arts and crafts type folks this is my dilemma .........

A liquid air freshener placed on a vinyl/UPVC white window sill spilt and has badly stained to an almost plum colour blotch on the window sill. Likewise on removing some decor items there's other marks where they've sat. Have no idea how to remove these or what to use to cover them so it's not noticeable.

Have tried baking soda/vinegar mix and left on an hour = didn't budge it. Tried toothpaste = didn't work. Wondering if there's anything like a shiny white very thin almost like saran wrap thickness/clingy could maybe place on the whole sill and tuck under between the wood trim at base. Would need to be about 8ft long a shade over 4inches wide.

Alternatively is there a spray or paint type finish I could use that wouldn't be obvious not part of the original window.

Our only alternative we've been told is a whole new window and it's huge and apart from the staining on the sill there's nothing wrong with it.

Much appreciate any and all suggestions to return as like new as possible and best brand name material/solution to use.

Thanks in advance.
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Old 11-28-2022, 10:42 AM   #2
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Use oxygen bleach on vinyl products.
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Old 11-28-2022, 11:05 AM   #3
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Try a Magic Sponge.
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Old 11-29-2022, 01:01 AM   #4
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Thanks Sam and T&W. Tried both the Oxyclean, another bleach type solution and the Magic Eraser. Nothing is budging the big stain from the spilt air freshener oil that's penetrated.

Can anybody recommend which would be the best white spray type paint the will leave a smooth slight shiny finish in keeping with the untreated UPVC window sills.

Much appreciated.

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Old 11-29-2022, 07:00 AM   #5
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I have 2 thoughts...
You might try very fine wet / dry sandpaper (wet) like the body work guys use on paint... maybe start a spot trial w 1,000 grit. If it works do more and you can probably finish w finer grits... upnto naybe 4,000 if that's not Shiney enough some rubbing compound should increase the shine.
If above NoGo here's the best damn cabinet paint I've found. Not sure how it works on vinyl but I've painted formica vanity panel with it and it worked as well as on wood.
It's a water based urethane so very durable, easy to brush or roll and very easy clean up when working. It takes a couple to three thin coats for good hiding and better than heavy coats. I used this first on a bathroom vanity but liked it so well I switched all interior white trim to it.
Good luck and do report back!
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Old 12-01-2022, 01:05 PM   #6
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Soak a cloth or gauze pad with hydrogen peroxide and let it set for a while. I have used it on blood stains (don't ask how it happened) and grass stains on new carpet. I was amazed in both cases, then the chemistry awakened from it's deep sleep of XX years
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Old 12-01-2022, 02:36 PM   #7
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Thank you everybody so much for your input. We tried the Hydrogen Peroxide (we use that to treat our well water so was at hand), unfortunately to no avail.

Winemaker2 Don = THANK YOU We used the sandpaper and OMG, it was like night and day and shocked us how we were able to remove the deep purple stain, and now there's just a faint yellow outline type stain similar to others where ornaments sat that we were able to remove somewhat to make hardly noticeable. We will be doing that with baking soda and vinegar again later on today.

For now though, it is so so good not to see such a glaring plum colour on our white window sill staring at us any more. Feels a little rough where we removed it with the sand paper but will try fine something to buff it back up if we can.

So THANK YOU everyone for you efforts. For us the Sandpaper did the trick for the most part Don
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Old 12-01-2022, 06:49 PM   #8
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Old 12-12-2022, 09:07 PM   #9
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Whitewall tire cleaner works very well, BUT, if there is any sun-rot/deterioration on the surface, that layer will come off too, which leaves a very rough surface- although clean and white.
I used it on yellowed white plastic on the exterior of a 5er, it removed all the yellow and left bright white plastic that was very rough.

Use at your own risk.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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cover, removal

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