Painting of Black Aluminum Window
Webmaster's Note: An exchange
of postings took place on the SENTOA listserv in May,
2008, regarding the procedures for the painting of black
aluminum window frames. Pertinent information from that
echange is posted below.
From: Frank Johns
Subject: Re: [Sentoa] Black Sea Glaze Windows
On 32-227, I have anodized windows & wheelhouse
doors with bare metal showing in spots and have been
able to refinish them as follows:
Light sanding with 320-grit paper just enough to remove
Wipe with paint thinner.
2 coats of Rust-oleum grey primer thinned 40-50% with
Penetrol (NOT normal paint thinner) I use a foam brush.
Sand again & wipe if needed
to level runs and sags but use very light pressure.
2 coats of Rust-oleum flat black paint, thinned 40-50%
with Penetrol. (I tried gloss black but it turns out
much too glossy for me.) I also use a foam brush for
Finish with the reddish rubbing compound they sell at
Pep Boys, NAPA stores, etc.
A car buff showed me how to do this and since these
materials are not normally sold in marine stores, you
will be pleasantly surprised at their cost. The secret
of the Penetrol is that it makes the paint thin and runny
enough to flow smoothly but does not destroy the hiding
ability of the paint. Finally, I would practice on something
other than the boat first.
From: John Walters
Subject: [Sentoa] Black Window Trim
I used the same process that Frank Johns
described about 5 years ago on Jubilation 37008. There
are two minor differences that I found sucessful. They
are that I used 1 part epoxy for the paint and when preparing
the aluminum after sanding I used vinegar on the raw
aluminum before using paint thinner to clean the surface
and then primer. The areas I used this system on have
held up very well. In fact I think this process was written
up in the Nordic Tug Newsletter a few years ago.
San Carlos, Sonora Mexico