how long does jointing compound need to dry before painting?

[angeldust1]

I've put tapered edge plasterboard up in my new conservatory and filled the joins and corners with jointing compound. I now want to start to decorate - plasterboard primer first, then emulsion. My question is - how long do I need to let the jointing compound dry for before put the primer on?

Thanks in advance

 

[roughcaster]

If you have some background heat in your conservatory, the joints that you did should be ok to decorate after 2 or 3 days or so,, just to make sure. You'll know when they have dried out. Sand them down first though before you paint.This time of year,if it's in a room without heat, they can take a long time to dry properly.... Even when you decorate/paint a room/wall, again,,a little heat would be of benefit.

Roughcaster.