Thank you for the posts and advice in helping out F430 and his questions. We have spoken this morning and hopefully we have put his concerns at rest.
AnhyFix has been in production now for approximately 6 years so you can imagine how much has been used to fix different types of uncoupling membranes including Ditra Matting of course. Over the years I have taken numerous calls related to fixing tiles to anhydrite screed and i personally on many occasions have suggested using Ditra Matting fixed with AnhyFix.
I am not aware of any issues where AnhyFix adhesive has not bonded sufficiently to Ditra Matting.
Adhesive that has only recently been applied is still "green". Rapid setting adhesive will hold moisture for a number of days and progressively day by day the adhesion / bond increases as the adhesive hydrates. Sure, rapid set adhesives set sufficiently to walk on after 2 - 3 hours but they will then continue to progress with time.
AnhyFix at full set is an extremely strong adhesive with high adhesion properties, comparable to a C2 type cement based adhesive. At full set, the adhesive will anchor the fleece down and if you tried to take up the Ditra I am pretty certain that it would tear the fleece away from the underside of the plastic.
From reading the posts above, there is uncertainty when it comes to fixing Ditra Matting and as manufacturers we need to be providing clear and concise advice and solutions.
I have asked my colleagues to contact Schluter to see if between us we can carry out tests using different Tilemaster adhesives to fix Ditra Matting. The result of which will hopefully mean we can provide some clear instructions for people to follow.
Best Regards
Mark