Did some tiling with this. It's modified, but approved over and under Ditra and Kerdi with all surfaces. It's messy compared to Bostik Ditra set. It always seems to fall or fling off the trowel. But it is pretty convenient to not need to mix both types to be warranty compliant.
12 hours to grout is also nice, and it comes in one of the best bags of any grout: plastic with an extra 6" folded over so it's easy to open, pour, and reseal.
12 hours to grout is also nice, and it comes in one of the best bags of any grout: plastic with an extra 6" folded over so it's easy to open, pour, and reseal.