Is 'wide space grouting' mould resistant [wil be sealed]

[quatro]

Hi - I'm thinking of putting tavertine tiles on bathroom walls and using 3mm spacers - do I need 'wide space grout' for this ?
Also when grouted then sealed will the whole job be mould resistant? Or should I get mould resistant grout in the first place?
Thanks......

 

[Jasonb]

You don't need wide joint grout for 3mm joints even though the depth of joint will be more as the stone is likely to be 10mm thick.

Try something like Mapei Ultracolour plus, this is OK for joints 2-20mm and is mouly resistant, can be used on walls or floors. Jasmine is what I usually use with light coloured natural stone and they do a matching mastic for internal corners etc.

Jason

 

[quatro]

Thanks jasonb....