Clear a Slow Draining Bath or Shower Drain

By The FixDelivered Team · Updated 2026-08-02 · 6 min read

A slow-draining bath or shower is a common household nuisance. While it might seem like a minor issue, if left unaddressed, it can lead to standing water, unpleasant odours, and potentially more significant plumbing problems. Most often, the culprit is a build-up of hair, soap scum, and other debris. The good news is that in many cases, you can tackle a slow-draining bath or blocked shower drain yourself with some basic tools and a bit of patience. This guide will walk you through the process, helping you get your water flowing freely again.

Why Your Bath or Shower Drains Slowly

The primary reason for a slow-draining bath or shower is the accumulation of materials within the plughole and trap (the U-shaped pipe beneath the drain). Common culprits include:

Hair: Especially long hair, which can tangle and create a net-like obstruction.
Soap Scum: Residue from soaps, shampoos, and conditioners that sticks to pipe walls and traps hair.
Grease and Oils: Though less common in baths/showers than kitchen sinks, body oils and bath products can contribute.
Mineral Deposits: In hard water areas, limescale can build up, narrowing the pipe diameter.
Small Objects: Occasionally, small items like jewellery or parts of toys can fall down the drain.

Tools You'll Need

Before you start, gather these simple tools:

Rubber gloves
Screwdriver (flathead or Phillips, depending on your drain cover)
Old cloth or towel
Bucket (optional, for catching water)
Plunger (cup-style, specifically for sinks/baths)
Drain snake or hair grabber tool (a flexible plastic strip with barbs)
Torch (for better visibility)

Safety First

Always prioritise safety when undertaking DIY plumbing:

Wear rubber gloves to protect your hands from grime and potential bacteria.
Avoid mixing different chemical drain cleaners, as this can produce dangerous fumes. In fact, we generally advise against chemical cleaners altogether, as detailed below.
Be careful when using tools like screwdrivers or drain snakes to avoid damaging plumbing fixtures or pipes.

How to Clear a Slow-Draining Bath or Shower

Follow these steps to clear a slow-draining bath or blocked shower drain:

Step 1: Remove the Drain Cover

First, you need access to the plughole. Most bath and shower drain covers can be removed with a screwdriver. Some pop off, while others may screw out. If you have a pop-up stopper, you might need to unscrew it or twist it to remove it. For a shower, the cover is usually a simple grate. Use your torch to inspect the area once the cover is off.

Step 2: Manual Removal of Surface Debris

With your gloves on, carefully reach into the drain opening and pull out any visible hair, soap scum, or other gunk. You might be surprised by how much you can retrieve this way. A pair of tweezers or needle-nose pliers can be helpful for reaching stubborn bits.

Step 3: Use a Plunger

If manual removal isn't enough, a plunger can create suction to dislodge blockages further down. Ensure there's enough water in the bath or shower tray to cover the rubber cup of the plunger. If not, add some. Place the plunger firmly over the drain, creating a seal. Pump vigorously for 15-20 seconds, then quickly pull the plunger away. Repeat this several times. You might see debris come up, or the water might start draining faster. If a pop-up stopper mechanism is obstructing the seal, you may need to remove it first.

Step 4: Try a Drain Snake or Hair Grabber

For blockages deeper in the pipe, a drain snake (also known as a plumbing auger) or a simpler plastic hair grabber tool is invaluable. These flexible tools are designed to navigate the bends in your pipes and hook onto hair and debris. Slowly feed the tool down the drain until you feel resistance. Twist or manipulate it to snag the blockage, then carefully pull it back out. You'll likely retrieve a significant amount of hair and gunk. Repeat this process until you no longer pull out debris.

Step 5: Flush with Hot Water

Once you've removed as much debris as possible, run the hot tap for several minutes to flush the drain. The hot water will help to dissolve any remaining soap scum and wash away loose debris. If the water drains freely, you've succeeded! If it's still slow, you might have a more stubborn blockage or need to repeat the steps.

What About Chemical Drain Cleaners?

We generally advise against using chemical drain cleaners. While they promise quick fixes, they often contain harsh chemicals that can:

Damage pipes: Especially older or PVC pipes, leading to leaks.
Be hazardous: Causing skin burns, eye damage, or releasing toxic fumes.
Be ineffective: They often just create a small channel through a larger blockage, meaning the problem returns quickly.
Make professional help harder: If a plumber needs to clear a drain with standing chemical cleaner, it poses a significant health risk.

For these reasons, stick to mechanical methods first. If you must use one, follow the instructions precisely and ensure good ventilation.

When to Call a Professional

While many slow drains can be cleared DIY, there are times when it's best to call in the experts. You should contact a professional plumber if:

Your DIY efforts don't resolve the slow drainage after several attempts.
The blockage is severe, and the water isn't draining at all.
You notice foul odours persistently coming from the drain, suggesting trapped organic matter or a larger issue.
You hear gurgling noises from other drains when the bath/shower is used, indicating a potential main sewer line blockage.
You suspect a problem with your main drainage system, rather than just a localised blockage.

For reliable, qualified help, you can easily find emergency plumbers near you through FixDelivered. They can quickly diagnose and fix stubborn or complex blockages.

Preventative Measures

Once your drain is clear, implement these habits to prevent future blockages:

Use a drain protector/hair catcher: Place one over the plughole to catch hair and debris before it enters the drain.
Regular flushing: Pour a kettle of hot (not boiling) water down the drain weekly to help dissolve soap scum.
Regular cleaning: Every few weeks, remove the drain cover and manually clean out any visible hair and debris.
Avoid pouring grease: Never pour cooking oils or grease down any drain, as they solidify and cause severe blockages.

By following these steps, you can often resolve a slow-draining bath or shower yourself, saving time and money. If the problem persists or seems more complex, don't hesitate to seek professional help. FixDelivered makes it easy to tell us your emergency and get a qualified local plumber fast. You can also learn more about how FixDelivered works and explore our plumbing emergency guides for more helpful advice.

Frequently asked questions

How often should I clean my bath or shower drain?

It's a good idea to perform a quick clean (removing the drain cover and manually clearing hair) every 2-4 weeks, especially if you have long hair. A full deep clean with a snake or plunger might be needed every 3-6 months, or whenever you notice slow drainage.

Can I use baking soda and vinegar to clear a drain?

While baking soda and vinegar can create a fizzing reaction, their effectiveness on significant hair and soap scum blockages is limited. They are generally safe and can help with minor odours or very light build-up, but they are not a substitute for mechanical removal methods like plunging or snaking for a truly blocked shower drain or slow draining bath.

What's the best tool for removing hair from a drain?

A flexible plastic hair grabber tool (sometimes called a drain weasel or drain stick) is highly effective for removing hair. Its barbed design allows it to snag hair and pull it out easily without damaging pipes. A drain snake is also excellent for deeper blockages.

Why does my shower drain smell even if it's not blocked?

A persistent foul odour from a shower drain, even if it's draining, can be due to several reasons. It could be residual soap scum and bacteria build-up within the P-trap, a dry P-trap (allowing sewer gases to escape), or a more serious issue like a partial blockage further down the waste pipe or a problem with your main ventilation system. Try flushing with hot water and cleaning the trap, but if the smell persists, a plumber should investigate.

Need a plumber now? Tell us your emergency and FixDelivered will find and confirm an available local plumber near you, usually within the hour.

Written by the FixDelivered Team. Reviewed by Rupert Lowe, Editor. Last updated 2026-08-02.