Time between scratch coat & top coat

[BazzaS]

Hi Forum,
Some advice please
I've laid a scratch coat on a small breeze-block wall. The mix was 5-1 with no other additives.
How long do I need to wait before applying the top coat please ? (I intend to use 5-1 mix again with no additives).

Thank you

 

[dontbelieveawordofit]

4:1 would have been better for a scratch coat , but it’s not a problem,
and the labour is halved with plasticiser in the mix.
let it cure , couple of days.

 

[BazzaS]

Thank you benny....