Morning guys, the point I was trying to make, which I think may have been lost in the trail is that the total depth of product on the concrete side, from top of concrete to underside of
tile may be 9mm once you take into account 6mm HBB and 3mm under
tile adhesive upon that. If you were to try to
tile 18m2 in one operation with adhesive on the concrete side, to me that is 9mm. If there were a problem and the adhesive rep cut a cross section through
tile, adhesive, and concrete, they would indeed see ?mm.
We are on the same side no.
The laughable thing is that these same manufacturers imply no more than 3mm total depth to avoid "stress" but say on the bags "upto 20mm"
Sorry foe typos, its early.