Sorry to jump on this one Dan, and I don't wish to take this thread in the wrong direction.
However Dave did indeed have an issue when looking to fix a decoupling membrane onto an anhydrite screed with H40 Eco Ideal. In short the adhesive did not cure by the next day and Dave had to redo the floor. I apologise if he has not been looked after since, we now have a rep on the area,and I will instruct him to get in touch and try to help Dave out.
Apologies again if this is leading the thread "somewhere else", if it is worth anything I think that the poll is a great idea, and it is quite rewarding for us to even be on there as I am pretty sure we probably were not on last years!!
Cheers for responding Bill, you're right I think this is the first year we've stuck you on there. We recognised a few people using it in the last when they voted for "other" though.