Micromax 2 query?

[On one]

Well I stand corrected. Apologies for that bum steer,still doesn't seem right though.

 

[kaharrison9]

The gt1 admix is for timber floors that are not overboarded which is understandable but overboarded floors the mm2 alone according to the back of the grout packet is fine. There is not even a mention of the GT1 on the info on the detailed grout packet.

As mentioned above I have a Ardex floor and a MM2 floor exactly the same background and one has grout cracks and one hasn't.

Bearing in mind the MM2 is not a cheap product.

 

[Andy Allen]

your right about the over boarding, same as they recommend bal super flex grout on over boarded floors, but bal wide joint grout with gt1 on floors that are not over boarded, not saying you have done anything wrong, but if the floor has to much deflection then the grout may not have been good enough without the admix.

really is a mine field imo, which is why I prefer mixing gt1 with wide joint grout for all my wooden floors.....belt and braces...

 

[AliGage]

Are the cracks all over or isolated to one area?

 

[kaharrison9]

I have not lifted all the floor protection but it is mainly sporadic in areas and in say 6 tile runs.

I have total confidence in the 100m2 Ardex grouted floor which I didn't use admix with no cracks and am kicking myself for not using it downstairs.

I have lost confidence where the MM2 floor is leading to.

The marketing of the MM2 is very impressive on the bag, crack resistant, timber floors, heavy trafficked floors, highly modified,1 - 20mm joints, etc. Yet no mention of the admix. Even the bal technician made no mention of an additive.

Like for like with other grouts in my opinion it is not flexible enough alone to be described as a floor grout.

It is a new grout and maybe time will tell.

A test I have done is to fein master out one of the cracks and have grouted it with some Ardex, will be interesting to see what the result will be.