1 ,What is everyones opinion of mapei ultramastic 3 , I used it on a few floors last week it comes pre mixed single part and is also flexible... I did the small bathroom without ply as I was told this was ok and it looks like good stuff ?

2, I was in a rush to do the kitchen which is on floorboards and I forgot to add the flexible solution to the grout Is it going to be ok???

Personally, I would never use pre-mixed addy on a floor. Chances are your tiles are large format and there is a good chance the addy will never dry.

As for the grout, if you needed to add a latex additive and didn't ther is a good chance it will crack IMO.

Seen as it is a dispersion adhesive for walls and floors it will still be subject to tile size......


What size did you use..?..

here's the pdf on it..>> http://www.mapei.it/referenze/Multimedia/124_gb.pdf

Thanks for your quick replies i was a bit scepticle about pre mixed floor addy , the tiles were 300 mm x 300mm . Not make that mistake again. cheers for the pdf

The adhesive itself is extremely good, although a bit expensive.
Personally I would never use on floors.
Tend to use on glass and certain mosaics