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staining fiberglass doors

I have a stained fiberglass front door with side panels that is 11 years old and needs to be stripped and restained. What is the best product to use to strip stain off a plastic/fibergalss door in order to restain it.

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Posted 2013-04-22T12:16:37+0000  by trilaker trilaker

Hello Trilaker!


Stains suitable for application over fiberglass are very limited.


GelStain is one of just a few products suitable for staining these surfaces.


Since stains are surface coatings on fiberglass and do not penetrate into the surface (like wood), the prep for staining does not include a stripping agent.


Rather, you'll simply use 220-grit (or finer) to sand in the direction of the faux wood grain.


This will remove any flaking and chalking from the surface.


Wipe the surface clean using a dry terry towel and apply your GelStain using long, flowing strokes with a natural bristle brush.


On fiberglass, GelStain is not wiped off.


Smooth-on an even coat and allow six-hour dry-time; apply a second coat if you want the color to be darker.


After you're satisfied with the stain color, apply exterior polyurethane to protect the color.


Spar Urethane is an exterior grade clear coat that contains an ultraviolet light inhibitor ... it is one of only a few exterior clear coats suitable for your application.


Like GelStain, Spar Urethane is applied with long, flowing strokes using a natural bristle brush.


Lightly sand with 220-grit sandpaper between coats of urethane, wipe off the sanding dust, and apply your next coat.



Two or three coats of polyurethane are most common. Sheens include satin, semi-gloss, and gloss.

Posted 2013-04-23T13:49:07+0000  by Pat_HD_ATL
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