I need to build a shower real quick, so I am about to use Kerdi boards to do that. I do not have the time to tile (and not the funds to have someone make it), so I was wondering if I could just use the Kerdi curb and pour epoxy on the wood base (while the drain pipe is plugged and sealed on the sides obviously) to make a waterproof tray myself as long as the epoxy reaches the kerdi boards on all walls and the curb.
I find the off-the-shelf pans very expensive for what they are, and this would actually give me a perfect seal at the same time for half the cost.