Salts coming out of plaster

#1
Iv got some salt coming out of some plaster under some stairs. On a new build. Bonded and board finish. There is also salt coming out of some left over board finish, that was put on a bag? Is this a fault with the plaster?

Thanks
 

algeeman

It’s A Boy
#2
Iv got some salt coming out of some plaster under some stairs. On a new build. Bonded and board finish. There is also salt coming out of some left over board finish, that was put on a bag? Is this a fault with the plaster?

Thanks
Throw up a picture mate (y)(y)
 

zombie

Private Member
#8
Ive had this before, dont know the answer though it eventualy dried out and painted ok.
 

Dropsalot

Private Member
#10
Calm down...........salt is natural and also hygroscopic.......brush it off, every day, and then it will dry.
 

Squarehead

Well-Known Member
#12
Sounds like it was put on thick. If you put finish on too thick you'll get a layer of efflouresence. I tell customers to wait until fully dry, scrape off and it will be fine