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Painting concrete blocks - which paint?


AlanUK

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success with emulsion will depend how rough and porous the blocks are- and how good a finish you want 

its not the right thing --but may work if blocks are very smooth -masonry paint is the right stuff 

 I would certainly leave it a week after first coat before applying next one

 

Edited by scottishjohn
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Thanks John.  Would you concur with Mr Punter above about watering down the first coat too?

2 hours ago, scottishjohn said:

success with emulsion will depend how rough and porous the blocks are- and how good a finish you want 

its not the right thing --but may work if blocks are very smooth -masonry paint is the right stuff 

 I would certainly leave it a week after first coat before applying next one

 

 

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8 hours ago, AlanUK said:

Thanks John.  Would you concur with Mr Punter above about watering down the first coat too?

 

y es.

my garage was steel frame and blocks --very rough finish ,so were suggested and used a special 2 part  under coat which sealed it all and filled in surface  holes --then one coat of gloss paint --still shines now 30+ years later .

years later I split in to  3 units and just used silk emulsion I was suprised again how it just sucked it up - but seems to be as good a finished job --just not as cleanable like true gloss paint ,but would be fine probably for a domestic garage.

a modern masonry paint will be better to clean, I think 

but will cost more

 

used an airless industrial sprayer -used much more than I calculated due to blocks sucking it up ..540sqm  !!

 

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