A shower trap is one of those little things that can make a huge difference to your shower experience. Nothing could be more irritating than dirt and blockage spoiling your shower room. Luckily, that’s where shower traps, also known as shower wastes, come in.

The question is:

How does a shower trap work?

To help you out, at Plumbing Superstore we put together this handy guide.

Here’s what we’re going to cover.


Table of contents:

P
Paul M.
Verified Buyer
5.0 star rating
14/03/25
Great Small Countertop Basin
Review by Paul M. on 14 Mar 2025 review stating Great Small Countertop Basin
I was looking for a countertop basin for a very small cloakroom and stumbled across this product which seemed to fit the bill however at the time there was a missing dimension of the base that sits on the countertop.

A phone call took place and I waited for the expected uninformed sales staff to pick up. To my surprise the agent that answered my call, Stephen, understood exactly what was needed, took my number and promised to get someone to measure a basin for that dimension. No more than 20 minutes later and Stephen called back with the information and offered to send me a quote so I had all the information I needed. It seems he went and measured it himself to make sure the information was right - spot on service (and as an engineer here I appreciate more than anything, being able to explain to someone that understands the components & how the applications they are used).

The basin itself looks smart, is well made and solid, yet light in weight. Worked perfectly for the application.

The only thing I would caution is the waste type and tap combination you use with this. I opted for a budget domed pop-up waste and a waterfall tall basin mixer. All looks really smart but I found due to the small size I’ve had to turn the water down on both hot and cold feeds to prevent water splashing on the waste and bouncing out of the bowl when the tap is on full mix mode. Individually they don’t do this when on max. It may be the shape of the dome on my waste and it may mean I change it later BUT I needed a small basin and that’s what I got. Hence the 5* for the basin and the great service from Stephen. I will definitely shop here again.
P
phil b.
Verified Buyer
5.0 star rating
13/11/24
Nice compact basin
Review by phil b. on 13 Nov 2024 review stating Nice compact basin
Great basin for those like me who have a limited depth of worktop to mount the basin on, coupled with a swivel spout mixer tap it's perfect for our needs. Great quality, value and service from the plumbing Superstore
P
phil b.
Verified Buyer
5.0 star rating
13/11/24
Nice compact basin
Review by phil b. on 13 Nov 2024 review stating Nice compact basin
Great basin for those like me who have a limited depth of worktop to mount the basin on, coupled with a swivel spout mixer tap it's perfect for our needs. Great quality, value and service from the plumbing Superstore
K
Keith T.
Verified Buyer
5.0 star rating
15/08/24
Flue flashing
Review by Keith T. on 15 Aug 2024 review stating Flue flashing
Great product and easy to fit, well pleased
R
Ray W.
Verified Buyer
5.0 star rating
14/08/24
stair rail
Review by Ray W. on 14 Aug 2024 review stating stair rail
Great product works well with my Etsy items

What is a shower trap?

Shower trap

Like similar plumbing supplies, shower wastes and traps protect your shower from inconvenient drain blockages by retaining objects such as hairs and stopping them from being swept down the drain. As a result, water can easily drain, without any overflow.

The shower trap is connected to the underside of the shower tray under the floor. It’s similar to the trap in your kitchen sink and fulfils the same purpose, allowing water to freely drain out into sewage systems quickly and easily.

All in all, it’s a vital if somewhat underappreciated component of a well-functioning shower drainage system.

If water can’t drain properly, leaks and other types of damage to your shower room might occur, and over time these issues will become bigger and more costly to fix.


How does a shower trap work?

There are several types of shower trap, including the shower drain P trap. However, S-shaped traps are the most popular choice. The main difference between these types of shower drain solutions is the width of the tray and the flow rate.

Typical flow rates are 11.5 litres per minute, 24 litres per minute and 54 litres per minute, but other options are also available.

You might be wondering:

Should there be water in the trap shower?

You might be surprised, but the answer is yes. Shower waste traps are designed in a way to always have a little water sitting in the shower tray in order to prevent any malodorous gasses from the sewer to enter your bathroom.

So, if you were wondering how does a shower trap stop smells, you have your answer.

When shower water flows into the shower drain pipe, it creates a vacuum that might slow down its discharge. To solve this problem, vents are fitted to allow air to move continuously along the water flow.

The shower base slopes downwards in the direction of the drainage hole to ensure water moves this way by force of gravity, eliminating any build-up of soapy water that you might slip on and injure yourself.


How to clean a shower drain trap

In order for your shower waste to be able to function properly, it needs to be kept clean and free from any hairs or dirt.

But how do you access a shower trap?

It’s quite straightforward, actually. All you need is a screwdriver, a piece of cloth, a spray bottle and some white vinegar for the actual cleaning.

One of the popular online queries for this topic is ‘how to remove shower drain trap’. We can tell you here:

Start by taking the cover off the waste. Use the screwdriver to remove the collected hair and dirt from inside the cover. Then unscrew the white part (the eau de trap) from the cover itself.

Once you’re done removing the shower waste trap, pop the parts in a bucket full of soapy water and rinse them. Then, mix water and vinegar in the spray bottle and spray the shower waste and wipe it with a cloth until it’s clean.

Once you’re satisfied with the level of cleanliness, simply reattach the two parts of the shower trap and put it back into place.

That’s it! You’re done!


Keep your shower room neat and tidy

Shower traps and accessories are essential to prevent blockage and potential damage to your drainage system. What’s more, they provide you with a comfortable, safe, hassle-free shower experience.

And now that you know the answer to the question of how does a shower trap work, you can fully appreciate this humble servant in your bathroom.

Make sure you clean yours on a regular basis, and you’ll soon forget all about standing water in the shower.

Call our Super team banner

Was this guide useful?

Thanks for rating this article.

Mentioned in this product guide: