I've done 100m2 plus floors with Dural and had no issues, but that's in recent years, after their original issues. I must admit having the final mesh layer does appear to make a difference in the bond strength to the mat. Having had a labourer try and remove a 500x700 piece of limestone from it, I could have just told him to cut straight thro the joint and mat in one go to remove it, but I forgot!😀
Truth was I wanted to see just how good it was! Took him 45 mins to hack it off completely 😀
It stuck like the proverbial! .....had to cut the mat out anyway, it was destroyed! Good job it wasn't grouted and the last stone of the previous day 🙂
When using Dural I always try and cut my lengths the previous day and lay it out upside down over night on some corex or something.
Next day it's perfectly flat and much easier to keep flat.
.......having said all that, 9 times outta 10 I use Ditra! Haha 😀