I'm having a go at repainting our front gates - they are fairly heavy,
presumably iron or steel, and I've got rid of most of the
peeled/cracked paint leaving parts of exposed metal. What paint or
paints should I use? I've got some Hammerite direct to metal paint -
can I use this for the painted bits too as an extra coat? Also found
some oxide primer in the shed.
Here's a pic:
All I know is you need to be careful with wrought iron gates as I allowed
somebody to dip my front gate in some kind of back to metal bath at his work
and several of the joints needed to be rewelded afterwards!
From the Bed of Brian Gaff.
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Doesn't look galvanised to me. The texture of the painted parts look
like regions which have suffered long term pitting corrosion in the past
(cleaned off for repainting). I'd use oxide primer, then any "metal
paint" except Hammerite. It's welded, so not "quality" wrought iron
although it looks like quite a nice "hand-made" piece. Dipping in
caustic soda should not cause it to fall apart.
Given the gates have been long neglected I would expect rust to have
eaten into the structure but that doesn't seem to be the case - could
it just be tarnishing on the a galvanised surface? It has been painted
with a red undercoat as well.
I'm with Bill here. The colour in the photo might imply there could be a
zinc coating, but I'm presuming that the colour is a feature of the
light and the conditions when you took the photo and what we can see is
actually polished rust. Also the surface is uneven implying that layers
of rust have been removed.
Zinc coating are silvery, and stay silvery but polished rust is still
brown. Where a zinc layer has been compromised you would see brown rust
Many thanks - when it stops raining (bucketing down in London) I'll
take a close up and presuambly with this rain a fine new layer of rust
should appear soon. I'm not too sure how old the gates are - probably
about 25 years and put in by previous owners who bodged almost
everything. The reason I asked about galvanising is that I thought most
gates in recent years would be galvanised as standard.
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