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Posted by Jim Elbrecht on April 9, 2008, 11:41 am
On Wed, 09 Apr 2008 10:10:32 -0500, letterman@invalid.com wrote:
>I bought a used trailer with a homemade box on it. The walls are
>plywood, the roof is galvanized sheet metal. The galv. roof was bare
>for at least 5 years, so the metal had plenty of weathering to remove
>the oils that are on new galvanized metal. Last summer I painted the
>whole trailer with Rustoleum brand oil based paint made for metal.
Note that they make a 'rusty metal primer' a 'clean metal primer' and
a 'galvanized metal primer'.
> I brushed it on, and gave it two coats. The paint on the wooden sides
>has held up well, but over winter the paint almost completely came off
>the galvanized metal roof. It actually peeled off in large sheets.
>Apparently the contraction of the metal caused it to come loose.
No, IMO, 'apparently' the primer didn't bind to the galvanized.
>
>Is there any way to paint galvanized metal?
Yep. Read the product literature. Rustoleum has been sticking paint
to metal longer than any of the others that I can recall.
Jim
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