Firstly, thanks for all the advice I've seen on this forum which has helped me get this far...

I'm a novice (my 3rd DIY tiling job) and am laying a riven dark grey slate floor (300x300mm -approx!) in my kitchen. Was paranoid about ruining it so spent ages sorting them into thicknesses and planning layout and they've turned out nicely so far. I used BAL PTB Flex to fix to plywood base, cleaned with Lithofin Builders Clean, and sealed with Lithofin Stainstop Plus ready for grouting...

I spaced tiles by hand and got a nice flat surface and straight lines generally around 4/5mm. However, the smallest gap is around 2mm, and on one short edge (only 3 tiles worth) it goes up to 10mm (doesn't look as bad as it sounds!).

I asked at my local store for grout and guy sold me BAL Microflex Wall Grout in Ebony. Packet says suitable for joints up to 5mm and the word "wall" makes me worried that I shouldn't be putting this stuff on the floor (sales assistant looked like he should be at school so don't trust him!)

1. Is this fine and can I go ahead and grout or should I ditch it in favour of BAL Superflex Wide Joint (3-20mm) or BAL Microflex Wide joint (3-20mm)?

2. Can't find colour swatches anywhere on the web: Is Ebony (Microflex) the same colour as Charcoal (Superflex)?

Cheers

Originally Posted by flm

Firstly, thanks for all the advice I've seen on this forum which has helped me get this far...

I'm a novice (my 3rd DIY tiling job) and am laying a riven dark grey slate floor (300x300mm -approx!) in my kitchen. Was paranoid about ruining it so spent ages sorting them into thicknesses and planning layout and they've turned out nicely so far. I used BAL PTB Flex to fix to plywood base, cleaned with Lithofin Builders Clean, and sealed with Lithofin Stainstop Plus ready for grouting...

I spaced tiles by hand and got a nice flat surface and straight lines generally around 4/5mm. However, the smallest gap is around 2mm, and on one short edge (only 3 tiles worth) it goes up to 10mm (doesn't look as bad as it sounds!).

I asked at my local store for grout and guy sold me BAL Microflex Wall Grout in Ebony. Packet says suitable for joints up to 5mm and the word "wall" makes me worried that I shouldn't be putting this stuff on the floor (sales assistant looked like he should be at school so don't trust him!)

1. Is this fine and can I go ahead and grout or should I ditch it in favour of BAL Superflex Wide Joint (3-20mm) or BAL Microflex Wide joint (3-20mm)?

2. Can't find colour swatches anywhere on the web: Is Ebony (Microflex) the same colour as Charcoal (Superflex)?

Cheers

I would swap to microcolour wide joint grout ebony, if you use wall grout on a wider joint it can shrink and crack when drying......the charcoal and ebony are both black grouts....Gaz

Will do Gaz, thanks for the advice.

Only just stumbled across the colours:
http://www.bal-adhesives.co.uk/newpdfs/literature/bal_grout_board_a3.pdf