Hardwall over brick

[dai dog]

I've got an extension coming up wich we're going to be spraying hardwall onto old and new work, (old being black mortar brick), question is, what's the preferred primer prior to spraying? Pva,sbr, or something else?

 

[flynnyman]

I've got an extension coming up wich we're going to be spraying hardwall onto old and new work, (old being black mortar brick), question is, what's the preferred primer prior to spraying? Pva,sbr, or something else?

Water

 

[Olican]

If its clean and free of dust I would hose it all down

 

[dai dog]

Cheers guys, that's good enough for me!