Mono over block/brickwork

I've never sprayed/applied mono straight over brickwork or block without base coat and meshing it first, but i have seen alot of lads doing this. What's your opinions on this ? Is this good practise? Or is there a risk that all the mortar joints will show through.
 
I've never sprayed/applied mono straight over brickwork or block without base coat and meshing it first, but i have seen alot of lads doing this. What's your opinions on this ? Is this good practise? Or is there a risk that all the mortar joints will show through.

It's no problem doing it. Just make sure the block work is not soaking wet.

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