Wet Room Draining Slowly
Water pooling on the floor of a wet room instead of clearing to the drain..
Water pooling on the floor of a wet room instead of clearing to the drain.
What is actually going on
Water pooling on the floor of a wet room instead of clearing to the drain.

The realistic causes, in order
Hair and product build-up in the trap, the ordinary cause Insufficient fall in the formed floor, which is a construction issue rather than a blockage A waste run with a long horizontal section that silts up
What we test on site
Trap condition and flow after clearing Floor fall towards the gully, measured rather than eyeballed Waste route and fall to the stack
Safe checks to make with slow wet room drainage
- Lift the grate and clear the trap of hair
- Pour a bucket of water and watch where it pools
- Standing water in a wet room eventually finds the weak point in the tanking. Slow drainage is worth resolving before it becomes a leak into the structure below.
Who does the work
- Gas Safe registered engineers — registration 554328
- Worcester Bosch accredited installer
- John The Plumb Ltd, company registration 10026483
Get slow wet room drainage diagnosed properly
Clearing is immediate; where the fall is wrong we explain honestly what putting it right involves.
Questions we get asked
What causes slow wet room drainage in a bathroom?
Hair and product build-up in the trap, the ordinary cause
What normally puts slow wet room drainage right?
Clearing is immediate; where the fall is wrong we explain honestly what putting it right involves.
Is it safe to keep using the system with slow wet room drainage?
Standing water in a wet room eventually finds the weak point in the tanking. Slow drainage is worth resolving before it becomes a leak into the structure below.
