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 May 4 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 

[Russell griffiths]

Use a board that can be tiled and skimmed, there’s lots of options, tank it and tile it where it needs tiling and skim the bit that needs painting, just feather the skim off to the tile line. 
i personally would fully tank behind the tray before fitting, but many would not bother. 

[stu w]

Board with tiler backer, job done 

[Nestor]

5 hours ago, Lincolnshire Ian said:

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 

 

Are you tiling past the shower door or flush with shower door frame?

 

You could keep the tile backer board and tiles inside of the door frame which is then fixed back to plasterboard depending on the width of door. 

Would need a very good seal.

 

You want a T shape trim to cover both the board and tile or a straight edge trim to cover just the backer board.

 

Have a look at:

https://www.protilertools.co.uk/categories/tile-trim

 

https://pureadhesion.co.uk/trims/

 

 

[Nickfromwales]

11 hours ago, Nestor said:

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

This is completely inaccurate. A single failure, once, is no measure for the rest of the trades and how they deliver work. 
 

If the tiles leak then having hardie board wont save you, it'll just delay the inevitable.

 

@Lincolnshire Ian, why are the walls white?

[Nestor]

15 minutes ago, Nickfromwales said:

This is completely inaccurate. A single failure, once, is no measure for the rest of the trades and how they deliver work. 
 

If the tiles leak then having hardie board wont save you, it'll just delay the inevitable.

 

@Lincolnshire Ian, why are the walls white?

Nonsense, Mr Tank it, Tank it.

How many shower cubicles / wet rooms have you tiled onto skimmed plasterboard in the last 10 years?

[Nickfromwales]

6 minutes ago, Nestor said:

Nonsense, Mr Tank it, Tank it.

How many shower cubicles / wet rooms have you tiled onto skimmed plasterboard in the last 10 years?

A hell of a lot more than you  (x3 eg 30+ years of it). 

 

I appreciate the title though, quite catchy

 

If a wall isn’t skimmed, then its bare plasterboard, so either way you’d need to call Tanky McTankface.

 

Absolutely zero issue to have skim on the boards.

 

“15 all, new balls please!”.