Painting over acrylic primer

[Shiralco]

I primed my bathroom walls with acrylic tile primer ready for tiling, but now find that the primer is about 6 inches too far up the walls. I have lightly rubbed down the shinny surface but trying to emulsion over it is proving to be virtually impossible. Any suggestions would be much appreciated.

 

[Robbie uk]

Give it a coat of oil based undercoat and when dry coat up with your chosen emulsion.

 

[Shiralco]

Thanks for this. I have a spray can of stain sealer - would that also do the trick?

 

[Robbie uk]

Yeah it may do, if not use the undercoat, you need the surface to be flat with no sheen or shine.