Accessible bathrooms
Getting the falls right in an accessible wet room
The short answer
In an accessible wet room, water clearance is a safety issue. Standing water is both a slip risk and a sign the fall is wrong.
Your questions answered
How much fall is needed?
Around 1:50 across the shower zone is typical; the exact figure depends on the former or screed system used.
Why does water pool at the edge?
Usually a flat spot at the perimeter or a tile bed laid without following the former's fall.
What makes it usable
A consistent gradient across the shower area to the outlet, with no flat spots at the edges, is what keeps the floor clearing.
Outlet flow rate should match the shower's output, especially where a large head or two outlets are specified.
Talk through wet room falls with the person doing the work
Send a short description of the room and what you want to change. We'll come back with practical options rather than a brochure.