Big-e

Did you see my reply on whatever forum you asked the same question on?

Here it is again:

You would be better off bending plasterboard around your studs then skimming it.

Depending on how tight the curve is you can either wet the outside surface of the plasterboard while it rests against a wall, this will make it sag, then carry on bending over the studs.

If its a tight curve cut parallel lines every 2" with a knife through the paper again on the outside surface then bend to the studs.

If you don't want to use plasterboard then flexi ply would be better than flexi MDF as the ply is WBP bonded. Flexi MDF is not made in moisture resistant or exterior grades.

Jason

You can buy plasterboard that is made specifically for bending. I have used it before and you can acheive very tight bends. Dry lining supplies in Light***er, Surrey sell it!

I've got alarm bells ringing now... matey's post above said basically never to use PVA on walls as the tiles stick to the PVA layer, and not the wall itself.

I've been tiling the bathroom, and I've PVA'd the walls in advance  

But... I did it because the manufacturer (am I allowed to say their name? Well... it begins with U and ends in D) states on the back of the tub of "Waterproof Wall Tile Adhesive":-

"Prime porous surfaces with 1 part UniBond PVA diluted with 5 parts water, and allow to dry".

Well... I've just rung their "technical helpline", and the guy there said it was imperative that the walls are cleaned up so that any traces of old wallpaper paste etc are thoroughly removed. Then, the diluted PVA (5:1) can be painted on, and at that level of dilusion it will absorb into the wall. The idea being that it won't leave a film as such.

Anyone got any further comments on this. I don't know if I'm happy or not having PVA'd the walls already?!

[quote author=woodsmith  link=1098379864/15#22 date=1115669870]Marcos I wouldn't worry. You thinned the PVA down 1:5 so it will have soaked into the substrate. I think you will find that most problems arise when undiluted PVA is used as it forms a film over the surface rather than soaking in.

Plus you followed the manufacturers instructions, which is usually a good idea. [/quote]

Got to agree with woodsmith ,It's imperitive that you dilute the PVA otherwise .It will be like plastering on glass