"sticks well, so place it correctly first time as it forms a black rubber ball if you peel it off. thick (1mm) and flexible enough to bridge small folds. long term performance is hard to gauge and hopefully I will never need to concern myself."
"I've used both this and the Visqueen brand (blue one). This one seems to want to stick to the backing paper better than to the DPM, making it extremely difficult to peel off the backing. The backing peels off the Visqueen much more easily. The Visqueen is also the same price.
That aside, this it does seem to stick the DPMs together, which is the whole point (although just not as well).
However if you can use the Visqueen, I'd recommend it over this one."