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Removing dried polyurethane from bathtub?

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Removing dried polyurethane from bathtub? slate_leeper 04-23-2008
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Posted by slate_leeper on April 23, 2008, 3:07 pm
The previous owner of my house had cedar boards put over the drywall
in the bathrooms, then applied polyurethane to them himself.
Unfortunately, he hadn't heard of that marvelous new invention called
masking tape.

Is there any way to remove the drips and overlaps of polyurethane from
the fiberglass bathtub and other areas without hurting the tub? The
yellowish polyurethane really looks ugly on the white tub.

Thanks for your time and help!
-dan z-


--
Protect your civil rights!
Let the politicians know how you feel.
Join or donate to the NRA today!
http://membership.nrahq.org/default.asp?campaignid=XR014887

Posted by ransley on April 23, 2008, 5:29 pm
> The previous owner of my house had cedar boards put over the drywall
> in the bathrooms, then applied polyurethane to them himself.
> Unfortunately, he hadn't heard of that marvelous new invention called
> masking tape.
>
> Is there any way to remove the drips and overlaps of polyurethane from
> the fiberglass bathtub and other areas without hurting the tub? The
> yellowish polyurethane really looks ugly on the white tub.
>
> Thanks for your time and help!
> -dan z-
>
> --
> Protect your civil rights!
> Let the politicians know how you feel.
> Join or donate to the NRA today!http://membership.nrahq.org/default.asp?ca=
mpaignid=3DXR014887

If tub is ceramic a sharp razorblade will do it. Residue could be
cleaned with paint remover.

Posted by dadiOH on April 23, 2008, 6:24 pm
slate_leeper wrote:
> The previous owner of my house had cedar boards put over the drywall
> in the bathrooms, then applied polyurethane to them himself.
> Unfortunately, he hadn't heard of that marvelous new invention called
> masking tape.
>
> Is there any way to remove the drips and overlaps of polyurethane from
> the fiberglass bathtub and other areas without hurting the tub? The
> yellowish polyurethane really looks ugly on the white tub.


First, be sure that the tub actually IS fiberglass. Not saying it isn't but
I'd think it is more likely acrylic.

Either way it can be physically removed. The coarser the material you use
the more damage will be done to the fiberglass (or acrylic). That damage
can be polished out with finer and finer materials.

If there isn't all that much, you could use auto rubbing compound on a pad.
It will physically abrade the poly AND the fiberglass but is fine enough so
that the abrasion on the fiberglass won't show, it will be polished. Try
first on an inconspicuous area.
If there is a LOT of poly, you could do the same thing with a small lambs
wool bonnet on a polisher at a SLOOOOW speed. You have to be careful to
neither cut through the gel coat nor heat it (friction).

I have a fiberglass table on the lanai and sometimes manage to get a
cigarette burn on it; easily removed with rubbing compound and a buffing
wheel on a Dremel tool.

The alternative to physical removal is chemical paint removers but I don't
know how they behave with fiberglass - which is polyester resin - or
acrylic; styrene can be used as a thinner for polyester resin, don't know
what it does to cured polyester.


--

dadiOH
____________________________

dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http://mysite.verizon.net/xico




Posted by ransley on April 23, 2008, 7:39 pm
> slate_leeper wrote:
> > The previous owner of my house had cedar boards put over the drywall
> > in the bathrooms, then applied polyurethane to them himself.
> > Unfortunately, he hadn't heard of that marvelous new invention called
> > masking tape.
>
> > Is there any way to remove the drips and overlaps of polyurethane from
> > the fiberglass bathtub and other areas without hurting the tub? The
> > yellowish polyurethane really looks ugly on the white tub.
>
> First, be sure that the tub actually IS fiberglass. =A0Not saying it isn't=
but
> I'd think it is more likely acrylic.
>
> Either way it can be physically removed. =A0The coarser the material you u=
se
> the more damage will be done to the fiberglass (or acrylic). =A0That damag=
e
> can be polished out with finer and finer materials.
>
> If there isn't all that much, you could use auto rubbing compound on a pad=
.
> It will physically abrade the poly AND the fiberglass but is fine enough s=
o
> that the abrasion on the fiberglass won't show, it will be polished. =A0Tr=
y
> first on an inconspicuous area.
> If there is a LOT of poly, you could do the same thing with a small lambs
> wool bonnet on a polisher at a SLOOOOW speed. =A0You have to be careful to=

> neither cut through the gel coat nor heat it (friction).
>
> I have a fiberglass table on the lanai and sometimes manage to get a
> cigarette burn on it; easily removed with rubbing compound and a buffing
> wheel on a Dremel tool.
>
> The alternative to physical removal is chemical paint removers but I don't=

> know how they behave with fiberglass - which is polyester resin - or
> acrylic; styrene can be used as a thinner for polyester resin, don't know
> what it does to cured polyester.
>
> --
>
> dadiOH
> ____________________________
>
> dadiOH's dandies v3.06...
> ...a help file of info about MP3s, recording from
> LP/cassette and tips & tricks on this and that.
> Get it athttp://mysite.verizon.net/xico

I didnt see the part it was fiberglass so , im wrong.

Posted by Joe on April 23, 2008, 8:57 pm
> The previous owner of my house had cedar boards put over the drywall
> in the bathrooms, then applied polyurethane to them himself.
> Unfortunately, he hadn't heard of that marvelous new invention called
> masking tape.
>
> Is there any way to remove the drips and overlaps of polyurethane from
> the fiberglass bathtub and other areas without hurting the tub? The
> yellowish polyurethane really looks ugly on the white tub.
>
> Thanks for your time and help!
> -dan z-
>
> --
> Protect your civil rights!
> Let the politicians know how you feel.
> Join or donate to the NRA today!http://membership.nrahq.org/default.asp?ca=
mpaignid=3DXR014887

Removing the nasties on this tub is so likely to turn out badly, it
might be wise to live with it for a while. Consider a fancier shower
curtain, kept closed, for example. Eventually a bathroom remodel will
mean a new tub, and your problems will then be history. Meanwhile, you
have my sympathy.

Joe

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