Does the tray come with drain cover and trap? Or do I have to buy this separate
Product is complete, so you don't need to buy anything separately. Drainage channel is integrated with the board and it also comes with grate (6 patterns available) and McAlpine waste trap.
There's option to include the waterproofing kit to your order, which I would especially recommend for timber flooring. It is very cost efficient, only £59 / 3m2˛ (2 coats).
I am happy to help if you have any questions.
Peter 020 7193 0953