tiling over paint (yet again) - Tile Advice

[doug boardley]

deffo not tiling onto browning:yikes:

 

[White Room]

better so plaster would be the best option then... but would it take more than one day for the browning coat to dry and then the finishing coat put over it?

The finsh should be put on the same day the undercoat is applied


what adhesive should i use on a cement render?

Render is a different material to plaster (gypsum)

I would use a powdered adhesive but prime the gypsum plaster first with mapei g or bal apd acrylic primer

 

[goatboy]

and why is PVA bad when acrylic primer is ok? that bit confuses me because acrylic primer has the same effect when it is dampened to PVA

 

[goatboy]

p.s. sorry for all the dumb *** questions but i want to get this right in my head before i talk to the guy doing the 'plastering' for want of a better word

 

[White Room]

Read this http://www.tilersforums.com/tile-adhesive-grout-prep-forum/2511-p-v-versus-primers.html

 

[doug boardley]

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

 

[doug boardley]

lol Mark:smilewinkgrin:

 

[goatboy]

thankyou will go and read it

 

[goatboy]

fair doos so reading that if it was a cement render on the wall then i could tile directly without priming it because there wouldnt be a problem with the gypsom/ tile adhesive reaction??

 

[White Room]

Thats spot on:lol:

 

[doug boardley]

 

[goatboy]

cool just hope this dude can render the walls in cement and get it flat enough for me to tile onto... does that PVA advice apply when rendering the wall in the first place I wonder??

 

[White Room]

If the walls are cleaned of well when the existing finish is taken off, it should need to be dampened with water for the new render

 

[goatboy]

so all the original paint on the bricks needs to be gotten rid of before it can be rendered then (sorry to go off the tiling topic a little)

 

[White Room]

Yes the paint should be removed as much as possible