Fitting a shower screen

[villa111]

I have tiled my bathroom on top of the existing tiles. The wall is plaster board.
The thickness to the cavity is now approx 1inch.
What Raw Plug do I use. The shower screen is a curved screen and is heavy.

 

[MHTILER]

hi,i suppose you already know that plasterboard is only meant to take so much weight,anyway to answer your question the type of rawl plug to use should be for plasterboard,length ie:-1 inch plus thickness of plasterboard 10-12mm thick to make sure the splayed bits on the plug get a grip at the back of the plasterboard.