what's the glue,caulking made of for bonding to the stainless?

at 2:15 the bottom of the drain tray looks flat. If that is the water will not completely drain out and funny things will be growing in the drain tray. The bottom of the drain needs to be V shaped and descending from left/right to the middle. So when the tray is level, and you pour water into the tray, 100% of the water drains out because the bottom of the tray is sloping down from each end of the drain trey to the drain hole in the middle. You can test this by putting the tray over your sink, use shims if necessary to make sure the tray is level, then pour your water. I sent one tray back and have another coming in that has the sloped bottom. We'll see if it passes the "all water must drain when level" test.

Step 24 demo the shower because it has fail .

What about a water test over night to see if it holds water...?

What it about pan liner ?

5

What a ridiculously confusing installation method.

very sloppy job, especially with caulking