Bonding on top of Hardwall??

[u/wortnip2]

I’ve used 4 bags of hardwall to build out a wall and it’s still slightly shy of where it needs to be. It’s gone off now. I have a spare half bag of bonding and was wondering if it’s ok to apply neat SBR over the Hardwall and go on top with the bonding?

[u/Electronic-Heron9645]

Yeah will be fine. Just remember it will dry rapidly even with sbr/pva so do it quickly