One of the final steps is to grout tiles after they have been set and allowed to cure.
The grout is recommended by Duradek to perform in outdoor applications so it doesn't dissolve or smear.
There are a lot of details concerning the drip edge which are not included in this project. Make certain you follow Duradek's instructions for that part of the job also.
Drip edge is a detail that can make or break a deck also and more so with a waterproof tile deck.