Wire brush V abrasive discs

Both seem plausible solutions - why not experiment and report back?

As long at it starts with an angle-grinder, it's science.... :o)

Cos I want to include the cost of the brush/discs into the job - I don't have them and don't want to buy both.

Erm, chemical paint remover (presuming the paint is oil based), brick cleaning acid, some types of graffiti remover et al!

A typical BFBI (brute force and bloody ignorance) 'suggestion' from the uninformed?

As above.

Very good description of the problem - perhaps letting us know what type of paint could help in formulating an answer!

Is masonary paint? Is it an oil based paint? Is it PEP (for the uninitiated Plastic Emulsion Paint)? Is it bitumen paint? Is it an acrylic paint? Is it a simple lime wash? Is it a combination of any of the above?

Or is it just *SUPER* *MAN*?

Big Grin

I like BF&I :-)

Yup, as far as I can tell. Could be anything though, hence the mechanical removal method, since I can't be sure exactly wot it is. House dates from

Anyway, thought you wern't talking to me?

With both you are turning the layer of paint into dust - could it be lead based????

Can you scrape some off - or use paint remover. These seem more efficient than turning the paint into dust.

Can't you get some sort of flap wheel that is very coarse?

I'd be tempted to experiment with paint stripper first, in the hope of softening it and scraping it without abrading the concrete.

Regards Richard

Why not an ordinary rotary sander? Not as scary as the angle grinder.

You've not been here long, have you?

How big? How bad is the concrete? Nitromors?

Its well beyond the abilities of a sander, lumps & bumps of old paint.

About 14 cills of varying sizes. Apart from one, the cills seem very good. Not sure that Nitromors shifts masonry paint. I'll check.

OK, forget my post!

With the number you are talking about and the previous comments, I think this will be an expensive option. If the concrete is in good condition then a regular paint stripper for the bulk and Nitromors to remove the rest, maybe?

It certainly does. The first thing to try IMO

I did suggest using an angle grinder to cut the plywood a few threads ago - I thought that was entering into the spirit of things.

But I did misunderstand the OP, for some reason I thought he was proposing to mount the abrasive disc on the AG (silly of me), but I now see he meant just what I was suggesting.

I was using a wire brush and an abrasive disk in an AG two weeks ago to remove rust from some steel shelving... it ain't half noisy and very aggressive. I don't see what's wrong with a blow torch and scraper.

Fine if it's oil based, but it doesn't work with masonry paint

Wirey things usually - too rough for a flat sheet based disk.

Chemistry is often better and quicker though. Follow up with a good pressure washer can work too.

Much depends on why you're doing this: to strip flakey paint before repainting, or to clean off graffitti. It's really hard work to take paint off rough concrete, or concrete with exposed aggregate textrue, if you're aiming for clean concrete afterwards. I generally wouldn't even try - it'll be easier to prepare & repaint than to go back to a decent quality bare concrete.

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Have you considered water-entrained sand blasting? It's much less messy (no dust, and safer) than dry blasting. Location might limit the possibilities. The Karcher pressure washer and attachment seems to work pretty well but a demonstration would be advisable.

Cic.