Painting rusty bathroom radiator

[Simon T]

Been redecorating my Bathroom

The radiator has gone a little rusty around the edges, would like to rub
down and repaint.

Question is firstly, what sort of primer?

Am gonna remove the rust spots best I can with sandpaper, then maybe put
some rust removing gel on them to get them back to bare metal. However, am
not sure of the best primer to use, bearing in mind radiators get rather
warm.

Can I get away with spraying a shot of Zinc primer onto the bare spots, or
will this crack when the central heating fires up? So should I buy myself a
small tin of Red Oxide?

Next question, top coat.

I read that dedicated radiator paint isn't all its cracked up to be, and to
stick with regular oil based paints (ive seen Satinwood recommended in
several places). So, is Satinwood the way to go?

Thanks in advance.

--
Best Wishes
Simon Taylor

[Scott]

On 21 Feb 2017 21:55:59 GMT, Huge <Hu...@nowhere.much.invalid> wrote:

>In our last house I removed the bathroom radiator, cleaned it down to bare
>metal with a cup brush in an angle grinder, then a coat of metal primer,
>coat of undercoat, coat of gloss. It was still fine 20 years later. I
>don't recall buying anything special in the way of paint.

In my previous flat I used radiator enamel that you painted on, turned
up the boiler temperature to maximum. opened all the windows and
vacated the premises quickly. Worked extremely well but I suspect it
is banned now.

[tabb...@gmail.com]

On Tuesday, 21 February 2017 21:47:20 UTC, Simon T wrote:

> Been redecorating my Bathroom
>
> The radiator has gone a little rusty around the edges, would like to rub
> down and repaint.
>
> Question is firstly, what sort of primer?

any suitable for steel. IME they're all equally iffy except epoxy. The original finish is hopefully a powder coat, far better than paint.

> Am gonna remove the rust spots best I can with sandpaper, then maybe put
> some rust removing gel on them to get them back to bare metal.

I've seen vinegar used

> However, am
> not sure of the best primer to use, bearing in mind radiators get rather
> warm.
>
> Can I get away with spraying a shot of Zinc primer onto the bare spots, or
> will this crack when the central heating fires up? So should I buy myself a
> small tin of Red Oxide?
>
> Next question, top coat.
>
> I read that dedicated radiator paint isn't all its cracked up to be, and to
> stick with regular oil based paints (ive seen Satinwood recommended in
> several places). So, is Satinwood the way to go?
>
> Thanks in advance.

again any solvent based metal paint would work. But you'll likely see rust spots reappear after a while.

If you want a thorough job, spray with epoxy, pickle & zinc dip or get new.


NT

[fred]

imho that radiator is close to failing. I'd replace it

[Brian Gaff]

Can you buy Red Oxide? I thought it was out due to lead content. Engenamal
is used, but I think that has to be stoved on.
I found that on an electtric oil filled radiator whatever sort of paint you
use is a terrible smell for weeks, and even with metal primer eventually
comes off, which begs the question what do they use when they are new?
Brian

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"Simon T" <darka...@REMOVETHISBITlineone.net> wrote in message
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[Rednadnerb]

I don't know what you should use but don't use one coat gloss, I have used all kinds of paints on radiators with no problems but one coat gloss yellowed almost immediately.

Brendan.

[damdu...@yahoo.co.uk]

On Wed, 22 Feb 2017 17:22:03 -0000, "Brian Gaff"
<bri...@blueyonder.co.uk> wrote:

>Can you buy Red Oxide? I thought it was out due to lead content.

You can buy lots of primer paints that call themselves Red Oxide but
they will not contain much if any lead.
It is still possible to purchase the old style Red Lead from very
specialised suppliers such as one that supplies materials for people
restoring old boats.
Currently a 2.5litre tin costs £120.



G.Harman

[tabb...@gmail.com]

I expect one could diy it for much less.


NT

[Simon T]

"Brian Gaff" wrote in message news:o8khbu$itr$1...@news.albasani.net...

>Can you buy Red Oxide? I thought it was out due to lead content.

Yes you can buy Red Oxide, its very popular with engineering firms who use
it as a metal primer. But there's no lead in it any more.

[The Natural Philosopher]

Wiki:
=====
The lead-based pigments (lead tetroxide/calcium plumbate, or "red lead")
were widely used as an anti-corrosive primer coating over exterior
steelwork. This type of paint might have been applied to garden gates
and railings, guttering and downpipes and other external iron and steel
work.

Similar red lead-based compounds were also widely used as a jointing
compound in engineering, to form steam- or oil-tight flanged joints in
pipework.

Red lead in paint was not banned by the 1992 legislation[4] or by more
recent EU REACH regulations[5] and the SPAB confirm it is technically
available in the UK without special licence.[6] In practice however it
has been replaced by safer alternatives (such as red oxide[7]) by most
UK/EU paint suppliers; and indeed of those that still supply it, some
mistakenly assume it is covered by the 1992 regulations and request
approval from a 'competent body' before purchase.
======================================================================
Red lead and red oxide paint are not the same



PS the best primer for rusty steel is chromic acid that turns rust into
stable iron chromate, which takes paint really well.



--
"I am inclined to tell the truth and dislike people who lie consistently.
This makes me unfit for the company of people of a Left persuasion, and
all women"

[The Natural Philosopher]

On 23/02/17 09:01, Simon T wrote:
> "Brian Gaff" wrote in message news:o8khbu$itr$1...@news.albasani.net...
>> Can you buy Red Oxide? I thought it was out due to lead content.
>
> Yes you can buy Red Oxide, its very popular with engineering firms who
> use it as a metal primer. But there's no lead in it any more.
>
>

There never was, That was red lead primer.



--
A lie can travel halfway around the world while the truth is putting on
its shoes.