Continuing tiling above bath on new-build plasterboard walls....

[garmcqui]

Hi all,

We have just bought a new-build house, and whilst there is a shower cubicle in the en suite, the main bathroom just has a bath, not ideal for guests.

Above the bath there are currently 3 rows of Porcelanosa tiles (200x333mm) above the bath, finished at the top with tile trim.The walls above the tiles are plasterboard and the builders have put breathable white emulsion on them (even though I asked them not to!).

We would like the same tiles continued up to the ceiling, an area of approx 3100x1150mm (3.6m2) up to the ceiling and fit a shower screen/curtain so we can use this as the main shower for guests etc.

My questions are:

- Does the emulsion paint need to be sanded off first?
- Can the tile trip just be cut off, or do the top row of tiles need to come off?
- Do the walls need to be waterproofed/tanked before tiling?

Thanks,

Gareth

 

[lathe tiler]

Paint- if you stick some strong sticky tape over the paint leave for 10min peel off and if the paint sticks to the tape it will need to come of - prime it with pva
If you can not get the trim out by knocking it with hammer and chisel more than likely the top row will rip the plaster board so it will be easer to cut the board out and replace it wher the 3 rows are ther will be a stud wall behind to screw new board to,

 

[Stef]

Try & remove the paint if you can, sometimes paint will not come off plasterboard.

"DO NOT USE PVA"

Use a designated tile primer, above is bad advice & I suggest you search this forum to see why you don't use PVA in a tiling environment.

I've extended a lot of tiling above a bath, if it's plastic trim then try & cut the back top edge with a Stanley knife, be careful though.
You could use a multi tool.
You could tank but then there will be no tanking on the 3 rows already fitted.

 

[lathe tiler]

Why would you not use pva

 

[radim]

Why would you not use pva

Use a designated tile primer, above is bad advice & I suggest you search this forum to see why you don't use PVA in a tiling environment.

answer in Stefs post above.

 

[Stef]

http://www.tilersforums.com/18-tile-adhesive-grout/2511-p-v-versus-primers.html

 

[afright]

Why would you not use pva

http://www.tilersforums.com/18-tile-adhesive-grout/2511-p-v-versus-primers.html

 

[Stef]

Haha, great minds think alike. [emoji106][emoji106]

 

[lathe tiler]

It says invalid thread

 

[Stef]

It says invalid thread

Type in PVA versus Primer in the search option & it should come up.

 

[lathe tiler]

What do u think pva is for ,
Iv personally tested pva my self on different surface and have tiled 100s of bathrooms using pva and never had a tile fall of the wall ,in the report it says depending on what adhesive you use,I only use professional materials, Mebys that's why I have never had a problem

 

[widler]

Oh ooooohhhh here we go , dum du du dum dum

 

[Stef]

What do u think pva is for ,
Iv personally tested pva my self on different surface and have tiled 100s of bathrooms using pva and never had a tile fall of the wall ,in the report it says depending on what adhesive you use,I only use professional materials, Mebys that's why I have never had a problem

Doesn't make it right though.
There are primers designed to be used along side tile adhesive, Weber pr360, Mapei primer G, Bal APD, I could go on.
PVA becomes live again if in contact with moisture, why risk it?
I have also tiled hundreds of metres using PVA years ago till I knew better & I also never had a problem but I'm not stuck in my ways where I can't learn new things.
Every days a school day as they say & when you stop wanting to learn then it's time to hang up the trowel...

 

[lathe tiler]

No1s not willing to learn but the advice I give is my advice (it's not bad advice)
Like u say pva has been used for years,
Try a 6 day course instead of a 3day

 

[widler]

Ha ha ha wheres me popcorn [emoji8]