Mapei: Mapei Forum

[ruscopico]

Hi All,

Hope some one can help, am doing a corner shower and from reading the forums have decided to Mapegum the whole area.

However, one wall is plastered and the other is cement board. From what I can find on the mapei website, I should be using primer g on the plaster and mapeprim SP on 'cementitious substrates'

Will either product do the whole job or should I stop being tight and buy both?

On another note, I'm not sure if I missed it but can't seem to fing the coverage of Primer G. Anyone aware of what the coverage would be using it undiluted on plaster which i think is the correct way?

Many thanks

[blocko]

Advice please...... If I was to have already primed all of the plastered walls with SBR (Everbuild from Tradetiler), is it advisable to apply Mapei Primer G on top of this prior to Mapegum, or do I need primer G for the Mapegum ???

Are the SBR and Primer G (and Mapegum) all compatible with one another?

Thanks - Geoff

[TonyUK]

I have a big problem with my wetfloor tiles that have been grouted for over one year with Mapei Ultraclour Plus. Water is now coming through the grout and through our downstairs ceiling. It is definately the grout and not the pipes as we have tested both.
Should i use a sealant on top of a new grout to make sure this doesnt happen again? Could it be as its upstairs there maybe a flexiability problem as the floor is bound to be more flexible than downstairs?
Any advice on how and what to replace the grout with to stop this would be much appreciated.

Thanks
Tony