One of the wetroom floors I have mention in previous posts is the Abacuse Direct wetroom elements floor kit.
Abacus Elements wetroom floor kits are a range of easy to install, tileable wet floor systems suitable for both domestic or commercial applications.
Abacus have been good enough to create a tutorial DVD to show how to fit there preformed wetroom floor kit to make the perfect waterproof wetroom floor.
This video by Abacus direct shows how easy it is to create a waterproof wetroom floor.
Abacus level access floors kits are available as a whole kit or as individual parts.