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If you mean indoors, I'd (and have):

- strip wall to state you want it.

- brush it / hoover it to provide clean dry surface.

- seal it with unibond or pva as if you were sealing it for plastering (www provides detail)

My entire bathroom wall is exposed brick. Only cos at time I wasn't confident enough to plaster it myself, then I thought it's alright, so it stayed.

PVA dries into the brick, you dilute it a bit with water and paste it on woth a big brush (I used a handbrush, like you get with a dustpan, dipping into a bucket of the good stuff). It's messy/splashes, but being water-based, wipes-up easy. You may get a slightly darker tone, but this is natural, just as if you wet the bricks, they'd go dark.

The bricks will change colour to a shade or two darker


PVA does seal but it dries to soft finish


For something way tougher, try Bona Chem Traffic acrylic floor varnish in dead matt


Or Leyland SDM do an Acrylic Dead Flat decorators varnish (in a turquoise container) The decorating shop up near the cemetery end of West Norwood high st sell it too, + free car park at the back. Or Whites on Brockley rise are good, see John the Irish guy in there, most helpful.


Don't roller it as it creates micro-bubbles that pop as they dry, leaving micro-craters. Thin the first coat with water and brush on with an acrylic chinex bristle or similar synthetic bristle brush. 2nd coat will go on way quicker then the first.


Use green liquid Flash floor cleaner to assist when cleaning the brush, it contains ammonia which is the solvent for latex/acrylic


Stir not shake for acrylic products (same bubble issue)

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