There is a lot of tiling in the houses so the tubbed adhesive is allowed to dry out before we grout anyway. Usually 1-2 days.
7m2 from a bag of Webber! What size trowel you using with that? I use the 6mm Raimondi trowel's for the walls and 10mm for the floors.
That's why I have went to them and asked the question, however I can't be going ahead with the work until they come round to my way of thinking. Ok in the short term but if something fails, then I can't be having it hanging over my head.
Unfortunately on building sites, it is all about cost, and if your spending xx amount on materials, theres really no point in doing the work, as time you add everything else in, your left with no money and no point in doing the work in the 1st place.