How long does coving adhesive take to dry?

Have just put up polystyrene coving and wish to paint it. How long before I can?How long does coving adhesive take to dry?
I use ';Henry, 440'; exclusively and allow 48 hrs cure time, but you can paint it at anytime before that.





I'll assume the process of painting by you is going to be done with care anyway.





I am curious though,,, is it primed already? Just curious, most I've ever purchased is white, poly vinyl.





Rev. Steven