Advice needed please, adhesives

**wolf777** · 09-09-2009

This is my first post so hello everyone. I am not a tiler and would like some advice on what adhesive would be best for my bathroom. I am using 8mm ceramic tiles 300x450 onto new plasterboard walls. Two walls have been skimmed ( well over 4 weeks ago) and the two walls around the bath/shower are just plasterboard. As far as I am aware I think I am ok for the weight restrictions on the skimmed walls so what I would like to know is what adhesive should I use, what size bed and should I prime the walls first. Thanks.

**david campbell** · 09-09-2009

i would use a (white) flexible adhesive and an 8mm trowel if the walls are in good condition

ps-welcome to the forum

**Matt** · 09-09-2009

A bagged cement based adhesive for a larger tile like you have. You will need to prime the skimmed walls, but not the plasterboard

**wolf777** · 09-09-2009

Originally Posted by matt257

A bagged cement based adhesive for a larger tile like you have. You will need to prime the skimmed walls, but not the plasterboard

Am I right in thinking that the primer must be acrylic based and which bagged adhesive would you recommend.

**Rad2474** · 09-09-2009

You could try mapei P9 which is powder adhesive and has a good pot life about 8 hours.Use sbr primer o the skimmed walls if they are really smooth and shiny then give them a quick rub over with a stiff brush or a bit of sandpaper.A 6 or 8mm trowel should be ok.

**Matt** · 09-09-2009

Originally Posted by wolf777

Am I right in thinking that the primer must be acrylic based and which bagged adhesive would you recommend.

As Rad says, Adesilex P9 would be a good adhesive. You could also use Keraquick or Kerflex Maxi.

If you use Mapei adhesive, I would use the Mapei Primer G.

**CJ CERAMICS** · 09-09-2009

as above except i would not recommend mapei keraquick as it will only last for 30 mins in the bucket so you have to be quick.
chris

p.s welcome to the forum

**Gazzatile** · 10-09-2009

If you want a slower product try Technik OPF

**jimbob** · 10-09-2009

Just been looking at the technical specs for Mapei P9 - does anyone know why it can only be used for tiles up to 300mm x 300mm on underfloor heating and tile on tile applications?

Wouldn't have thought the size of tile would matter for UFH, as long as adhesive was flexi