Join Date: Dec 2004
Location: Alameda, San Francisco Bay
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Re: Why Are Aluminum Mast Painted?
Casy, have you looked down the inside of your mast? Have you seen corrosion? How many "holes" do you have? Don't know who built your mast (Charleston? Selden?) but chances are there is some sort of protective coating on it which would be sufficient for the inside (at least when the mast was built.) The exterior of the mast really gets weathered and should be annodized or painted. Scatches in either should be touched up. Stripping the paint would also strip any annodization. Repainting the mast is your cheapest and most effective option. If you have a lot of "holes", I'd tap them and screw in a short shank screw in them (after bedding). Not only do holes weaken the structure, but like you said, can introduce salt spray/fog corrosion into the interior of the mast.
2000 Catalina 34 MkII