Painting Villaboard

I installed three villaboards in my laundry and applied water proofing material over them..
Instead of tiling all the walls up the ceiling, I was thinking of painting the side walls.

Can anyone give me any tips on painting over villa boards?
Will normal water based paint be ok?
Will end product looks similar to gyprock?
What about the nails? Bit hard to hide them with plastering..
Part of the villaboard surface is bit rough with the water proofing material..

Appreciate any comment and experience. If its not worth painting, might just have to tile over them..
Thanks..

 

Waterproofing repels water. So with water based paint my guess is it will bead.

Might get away with an oil based primer first.

But then you've got the issue of the nails and the rough surface from the water proofing.

You could run a timber molding to cover the nails.But dealing with the rough water proofing...I'm not sure what solution there is for that. Scrap it back or maybe prime it then plaster it then sand it back.

Not sure. Maybe other people have some ideas.

 

@Starlite - If you can paint over the wall sheeting then the waterproofing isn't thick enough. Waterproofing isn't paint and should be installed to the recommendation of manufacturers - any thinner and you will get leaks as soon as there's the slightest movement between any junction.

It isn't designed for its good looks or to be painted over. It requires protection from mechanical damage and exposue.

That is why it needs to be tiled.

 

Need to post pics I think

 

Thanks Scott for the input. I applied three layers of waterproofing material.. Will tile over it.

 

Yeah thats way too much to paint. I was thinking you'd tiled most of the wall and just had a little bit of waterproofing going past the edge of the tiles.

Definitely tile that.