How to paint over metal beading?

[nicemarmot]

Have had a new fireplace put in our kitchen. The fitter plastered up to the brickwork and there is metal beading (think that’s the right word?!) exposed where it meets the brickwork. The plaster has dried out and I want to paint now but not quite sure what to do about the little bit of bare metal. Was going to mist coat and then use Little Greene intelligent Matt on top. Paint shop recommended that I use filler over the top but not sure if this will make it look worse. Or is there a primer I can use that I can use matt paint over the top?

Not sure why plasterer didn't plaster over it but you can tidy it up with a bit of sandpaper so it's not lumpy. You can just paint it with emulsion or if you think it will rust and show through use some oil based paint first, the more matt the better because of key.

People on here love Zinsser but it's pricey if you won't use it much but the 123 is said to stop rust forming and seals the surface.

Thanks @Somanysocks, so would you use a filler first and then sand back as needed?

No need to put filler on really unless you're adept with the filler although cannot tell how neat the plastering is. It looks like you may have a ridge where plasterer plastered against the metal.

A few coats of paint may hide any imperfections.

Just paint it the same as the plaster, then worry about it if it's a problem. That's the treatment plasterers' beading normally gets - every external corner will have some at the surface, and nobody thinks twice about just painting it.

If you want to prime it to be on the safe side, normal all-purpose primer will do the job. Just check it says on the back that it's suitable for wood or metal.

I agree with you, filler is not going to improve the finish.

Bloody hell thats annoying!

I paint over most things but even I would probably fill that.

I find the very frothy filler much more forgiving, its almost like a mousse rather than a putty. But unsure whether that would stick.

www.wickes.co.uk/Polycell-Trade-Polyfilla-Ready-Mixed-One-Fill-Filler---1L/p/228110?utm_source=google&utm_medium=cpc&adpos=&scid=scplp228110&sc_intid=228110&gclid=Cj0KCQiA4b2MBhD2ARIsAIrcB-QEI8M9TZA0sCYWBmWhbdC9AlaWI-SOUuc8Lw7UgssrNmvLJxvd45IaAiHBEALw_wcB&gclsrc=aw.ds

Indoor beading is probably galvanised steel. You can paint it using a very small brush. Start with an oil-based ferrous metal or universal primer. After that you can do what you want. The primer is relatively expensive so get a small tin. If has to be stirred very very thoroughly as it contains a lot of solids.

Don't sand it or you will wear off the protective zinc plating and it will rust. Rust stains from beading will come through your decorative finish.

Thank you everyone. Will get a small pot of primer (don’t have much faith in my filling skills!).

if there are scraps of plaster stuck to the metal beading, you can rub them off with a green nylon pan scourer, used wet, before you paint it. The plaster will soften when you wet it.

It should have a smooth, rounded surface.