Waterfall bath tap fitted

Job Area: Woolwich (SE18)

Filmed on the job: the new bath filler running before the wall was tiled.

A wall mounted waterfall bath filler on concealed valves, run before tiling. What a waterfall bath tap is, and why the wall stays open for testing.

A new wall mounted waterfall bath filler, fitted on concealed valves and run with water.

What is a waterfall bath tap?

A waterfall bath tap is a wide flat spout, usually mounted on the wall, that pours a sheet of water into the bath rather than a round stream. Valves set into the wall feed it, so only the handles and the spout show once tiled. London City Plumbers fits the valves, the pipework and the spout as one job.

The photograph is a still off the video. It shows an opened-up wall above a white bath, the plaster cut back to copper pipes and a column of brass valve bodies with chrome fittings. Below them a wide flat chrome spout pours a sheet of water into the bath. The wall is still open because it was filmed on the job, before the tiling.

Waterfall bath taps

A waterfall bath tap is a wide flat spout, usually mounted on the wall, that pours a sheet of water rather than a round stream.

There are no taps on the bath rim. Valves set into the wall feed the spout, which is why it also gets called a wall mounted bath filler.

Opened-up wall above a white bath with copper pipes and brass valve bodies with chrome fittings set into it, and a wide flat chrome spout below them pouring a smooth sheet of water into the bath.
Copper pipework and brass valves set into the wall, with the bath spout running.

Concealed valves

Concealed valves sit inside the wall, the valve bodies on copper pipe, so once the tiles are on only the chrome handles and the spout show. That is why the wall is opened. The pipework has to be right and tested with water before the wall is closed, so a filler like this is run while the plaster is still open. The practical questions come first. Where do the hot and cold come off? Does the system have the pressure and flow for a wide spout? A gravity fed system, with the cylinder in the airing cupboard and the tank in the loft, may not have the head for it. Where does the spout sit over the bath, so the sheet lands in the water and not on the rim? And the valve bodies have to be set level and at the right depth for the tile thickness, because the handles come through the tiles, not the bare plaster.

Bath and shower sets

Valves like these are the kind that can serve a bath filler and a shower off the same set, with a diverter between them. That is what people are after when they search for a bath shower mixer.

Only the filler is in this photograph.

The order of work

On this kind of call we look at the supply and the system first. Then we chase the wall, set the valves and the spout, run the pipework and test it with water while the wall is open. The tiling and the handles go on after that.

Our bathroom page raises the same questions about supply and pressure, and we wrote up a concealed shower valve before.

Ring 07546 185778 and say what hot water system you have, and send a photograph of the bath wall if you can.

Common questions

Do waterfall bath taps need a certain water pressure?

They need enough flow to fill the spout and fall as a sheet. A gravity fed system with the cylinder in the airing cupboard and the tank in the loft may not have the head for it, so we look at the system first.

What is a wall mounted bath filler?

A spout out of the wall over the bath, its valves concealed in the wall behind.

Can a bath filler run a shower as well?

Yes. A bath shower mixer set runs the filler and a shower head off the same concealed valves, with a diverter between them.

Why is the wall open in the photograph?

Because the valves and the spout are set into the wall on copper pipe, and the pipework is run and tested with water before the tiles go on. Once it is tiled, nothing but the handles and the spout shows, so it has to be right first.

Where should a waterfall spout sit over the bath?

Over the water, not the rim, so the sheet lands inside the bath, and high enough to clear the bath when it is full. The valve bodies are set level and at the right depth for the tiles that follow.

Waterfall bath tap or bath filler tap on the rim?

A rim tap sits on the bath and is the simpler change. A wall mounted waterfall filler needs the wall opened for the valves, so it belongs with a refit or a retile rather than a tap swap, and it is run and tested while the wall is still open.

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