hi diy tiler-how much grout do I need?

[omie_1_kenobi]

Hi I am new to tiling and am planning on re-tiling around my bath this weekend. All tiles have been removed, and walls replastered. I have bought Bal white star adhesive and a 10kg bag of bal microflex but am now wondering if I have bought far too much and would the 3.5kg bag be enough (need to tile about 10 square meters and tiles are about 25cm x 33cm)? I've got acrylic primer too. Do I have to do anything to the wall before I put it on the plaster?
Also when I start tiling the back wall do I leave a small gap in the corners?
Thanks

 

[Gazzer]

Welcome to tilersforums.com.

 

[Ian]

Welcome along to TF

 

[Time's Ran Out]

Welcome - possibly - no - can do - and enjoy.

 

[DHTiling]

Hello and welcome , yes 3.5kg would suffice.

 

[White Room]

Hi and welcome......