Wall Preperation - TilersForums.com

[gulliver]

Hi All
I took your advice and bought a big clinker tile cutter thanks, could anybody advise what I need to do to prep my bathroom walls ready for fitting porcelain tiles, the walls around the bath and sink were tiled with ceramic tiles which I have removed and cleaned off the adhesive and the rest of the walls have been painted with emulsion, the walls are plasterboard with a plaster skin and are in sound condition from when the house was built approx. 20 years ago

Thanks Paul

 

[White Room]

How big and thick are your porcelain....

 

[gulliver]

Hi they are 300x 600 x 10 mm
Thanks

 

[Russel]

See if you can scrape off the paint and if its stuck on well then just prime and tile it.

 

[gulliver]

Thanks Russel what's best to use to prime it please
Regards Paul

 

[gulliver]

Could anybody advise whats best to prime the walls with and do I need to score the emulsion ?

Thanks

 

[Stef]

Could anybody advise whats best to prime the walls with and do I need to score the emulsion ?

Thanks

Take as much paint off as you can & use an acrylic primer or an sbr watered down.

 

[Time's Ran Out]

The moisture from the adhesive will soften the emulsion and when it dries it loosens from the plaster. Therefore the tiles especially with a 22kg+ weight per sq mt will drop off the wall!
Tiling to skimmed plaster with that size tile is close to accepted weight limits but to emulsion is irresponsible.

 

[dbstiling]

Plasterboard holds 32 kg per square metre, where plaster only holds 20 kg per square metre. You might find your tiles are too heavy for the substrate.
Just spent 3 weeks in London rectifying a job where the previous company had tiled to paint.

 

[kingnewport]

Personally if wall is painted I score the hell out of it and sbr it

 

[White Room]

If it's plasterboard then you've weakened it by scoring it, it's only the paper that gives it's strength.

 

[kingnewport]

Yer I wouldn't score pb

 

[Unused Account 1]

Flexi adhesive ,sticks to most background surfaces ,sbr or primer ,that will do it