I wish to tile a bathroom wall. The tiles are 30 by 60 cm and 10mm
thick, so quite heavy. I am told that I must remove the paint, or
atleast do something to make the tiles stick. What is the best way of
doing this? I have used a flame and chemicals to remove paint from wood
in the past.


--
Michael Chare

On 14/12/2020 16:28, Michael Chare wrote:
I wish to tile a bathroom wall. The tiles are 30 by 60 cm and 10mm
thick, so quite heavy. I am told that I must remove the paint, or
atleast do something to make the tiles stick.Â* What is the best way of
doing this?Â* I have used a flame and chemicals to remove paint from wood
in the past.


What is the wall made of?

Frankly though what keeps tiles up is the tiles underneath and the grout
between. The adhesive is to stop the whole thing doing a 'jacobs ladder'
so the actual force on the adhesive is almost zero once the thing is up...

I wouldnt bother to remove the paint unless its gloss and stops the tile
cement setting quickly


--
Renewable energy: Expensive solutions that don't work to a problem that
doesn't exist instituted by self legalising protection rackets that
don't protect, masquerading as public servants who don't serve the public.

On 14/12/2020 16:28:54, Michael Chare wrote:
I wish to tile a bathroom wall. The tiles are 30 by 60 cm and 10mm
thick, so quite heavy. I am told that I must remove the paint, or
atleast do something to make the tiles stick.Â* What is the best way of
doing this?Â* I have used a flame and chemicals to remove paint from wood
in the past.

Is the paint peeling? Is it easy to remove using scraper?

If the answer is "no" to both there is really no need to remove the paint.

If you really need to remove it then I understand isopropyl alcohol will
assist in softening the paint, not something I have ever done. If the
paint is old and hard then sanding is a possibility.

On 14/12/2020 16:28, Michael Chare wrote:
I wish to tile a bathroom wall. The tiles are 30 by 60 cm and 10mm
thick, so quite heavy. I am told that I must remove the paint, or
atleast do something to make the tiles stick.Â* What is the best way of
doing this?Â* I have used a flame and chemicals to remove paint from wood
in the past.


Gloss or emulsion? I would not worry unless it was really flaky emulsion
an/or a wall obviously suffering from penetrating or rising damp.

If it is gloss, wash with Flash or sugar soap to remove grease, then
maybe roughen with wire brush or coarse abrasive paper?

Use tile spacers of course to stop them slidng down before adhesive has set.

On 14/12/2020 17:17, newshound wrote:
On 14/12/2020 16:28, Michael Chare wrote:
I wish to tile a bathroom wall. The tiles are 30 by 60 cm and 10mm
thick, so quite heavy. I am told that I must remove the paint, or
atleast do something to make the tiles stick.Â* What is the best way of
doing this?Â* I have used a flame and chemicals to remove paint from
wood in the past.


Gloss or emulsion? I would not worry unless it was really flaky emulsion
an/or a wall obviously suffering from penetrating or rising damp.

If it is gloss, wash with Flash or sugar soap to remove grease, then
maybe roughen with wire brush or coarse abrasive paper?

Use tile spacers of course to stop them slidng down before adhesive has
set.

and one of very few good uses of waterproof PVA is to prime before
tiling to ensure adhesion and to prevent ingress of water.
TW

On Monday, 14 December 2020 at 18:14:27 UTC, TimW wrote:
On 14/12/2020 17:17, newshound wrote:
On 14/12/2020 16:28, Michael Chare wrote:
I wish to tile a bathroom wall. The tiles are 30 by 60 cm and 10mm
thick, so quite heavy. I am told that I must remove the paint, or
atleast do something to make the tiles stick. What is the best way of
doing this? I have used a flame and chemicals to remove paint from
wood in the past.


Gloss or emulsion? I would not worry unless it was really flaky emulsion
an/or a wall obviously suffering from penetrating or rising damp.

If it is gloss, wash with Flash or sugar soap to remove grease, then
maybe roughen with wire brush or coarse abrasive paper?

Use tile spacers of course to stop them slidng down before adhesive has
set.
and one of very few good uses of waterproof PVA is to prime before
tiling to ensure adhesion and to prevent ingress of water.
TW

but with a bathroom this can cause failure. PVA is definitely not waterproof.

For the paint, scraping it with something scratchy works. You don't need it all off.


NT

On 15/12/2020 16:39, Nick Cat wrote:
On Monday, 14 December 2020 at 18:14:27 UTC, TimW wrote:
On 14/12/2020 17:17, newshound wrote:
On 14/12/2020 16:28, Michael Chare wrote:
I wish to tile a bathroom wall. The tiles are 30 by 60 cm and 10mm
thick, so quite heavy. I am told that I must remove the paint, or
atleast do something to make the tiles stick. What is the best way of
doing this? I have used a flame and chemicals to remove paint from
wood in the past.


Gloss or emulsion? I would not worry unless it was really flaky emulsion
an/or a wall obviously suffering from penetrating or rising damp.

If it is gloss, wash with Flash or sugar soap to remove grease, then
maybe roughen with wire brush or coarse abrasive paper?

Use tile spacers of course to stop them slidng down before adhesive has
set.
and one of very few good uses of waterproof PVA is to prime before
tiling to ensure adhesion and to prevent ingress of water.
TW

but with a bathroom this can cause failure. PVA is definitely not waterproof.

For the paint, scraping it with something scratchy works. You don't need it all off.


NT

I would be tempted to just wire brush to roughen it then tile. You could
do just one tile give it a few days and see how easily it comes off just
to test it.

On Mon, 14 Dec 2020 16:28:54 +0000, Michael Chare
wrote:

What is the best way of
doing this? I have used a flame and chemicals to remove paint from wood
in the past.

Rent this, or something like it:

https://www.eibenstock.com/en/products/power-tools/sanding-milling-smoothing/scouring-machines/scouring-machine-epf-1503

and use some dust extractor. Takes off the top mm or so, done.

You (most likely) won't need one with diamond bits, the hardened ninja stars
will be enough.



Thomas Prufer

On 17/12/2020 08:11, Thomas Prufer wrote:
On Mon, 14 Dec 2020 16:28:54 +0000, Michael Chare
wrote:

What is the best way of
doing this? I have used a flame and chemicals to remove paint from wood
in the past.

Rent this, or something like it:

https://www.eibenstock.com/en/products/power-tools/sanding-milling-smoothing/scouring-machines/scouring-machine-epf-1503

and use some dust extractor. Takes off the top mm or so, done.

You (most likely) won't need one with diamond bits, the hardened ninja stars
will be enough.



Thomas Prufer

for removing paint from wood there are devices that are like
power planers but the 'knives' rotate in the same plane as the
device you have shown. The idea is to just scalp off the surface
without creating too much dust.

Like this one

https://www.youtube.com/watch?v=ELj6cYNLEFw