The gap between the shower tray and the plastered wall is too thick!

[Lincolnshire Ian]

Hi folks

The shower tray has been fitted and I have a 12mm gap between the edge of the shower tray and the plastered wall. 

My wall tiles are 8mm thick and I'm guessing the adhesive will be around 2mm.

I obviously would like the tiles to overhang the shower tray to give a good waterproof seal. 

How could I bridge the 2/3mm gap needed without reskimming the wall. 

Many thanks 

[jfb]

More adhesive?
or a 9mm board stuck on. Why does it need to be skimmed if you are tiling?

[Lincolnshire Ian]

4 minutes ago, jfb said:

More adhesive?
or a 9mm board stuck on. Why does it need to be skimmed if you are tiling?

It doesn't need skimming, I am trying to find an alternative way to build the wall out and still have a good seal between the tiles and shower tray. 

[Redbeard]

I searched: "'flashing' for joint between shower tiles and shower tray" and there seem to be the 'shower versions' of a roofing 'undercloak' which, it seems to me, might 'safely' and reliably bridge that gap. I have never used one, but they seem to be what I would be looking for if I had this issue. If the 'lip' of the flashing is a bit wimpy you might have to gun-in some gunge to provide a 'back-stop'. I hope that may help.

 

Edit: Of course many would simply get a (say) 6mm cement-based tile-backer board and screw or stick it on before tiling.

Edited 4 hours ago by Redbeard
Cement board sugg'n

[Nestor]

Personally I would not tile onto a skimmed plasterboard wall, they will become loose.

I would fit 6mm Hardie backer board on all 3 sides and space accordingly with packers for even dimensions.

[Redbeard]

1 hour ago, Nestor said:

Personally I would not tile onto a skimmed plasterboard wall, they will become loose.

I would fit 6mm Hardie backer board on all 3 sides and space accordingly with packers for even dimensions.

I don't disagree with you in principle, but I have just been thwacking hell out of the peripheries of a tiled insulated-plasterboard-and-skim wall in a shower cubicle done about 25-30 years ago - surely provoking potential falling-off if it was going to happen - and all is completely well (I wouldn't do it like that now, but it has obviously survived extremely well).

[Lincolnshire Ian]

2 hours ago, Nestor said:

Personally I would not tile onto a skimmed plasterboard wall, they will become loose.

I would fit 6mm Hardie backer board on all 3 sides and space accordingly with packers for even dimensions.

Thanks for the tip. This may be the way I need to go. 

How could I finish the raw hardibacker edge? The tile + adhesive could be covered by edging trim, but what could I do about the hardibacker edge between the tile edging trim and the plastered wall? 

Thanks