Expert Waste Trap Replacements

Waste traps are designed to stop unpleasant odours from drains and sewers from entering your property. They can sometimes develop leaks and if left unrepaired, these leaks can lead to costly damage.

Often, people do not know they have a problem with their waste trap until they notice a pool of water under their sink/bath etc. Sometimes damage has already been caused to the cupboards and floors beneath and therefore it is vital that you have access to a fast and responsive plumbing service.

Our plumbers will work swiftly to identify the problem and make any necessary repairs to your waste trap. If a repair is going to prove uneconomical, they can advise on a complete replacement and carry this out with your approval.

Our local plumbers are here to help 24/7/365. We’re ready when you need us.

Got an emergency? Call our 24/7/365 helpline! 0800 415 514

Why Waste Traps Matter in Your Plumbing System

A waste trap is a key part of your home’s plumbing. Installed beneath sinks, baths, basins and showers, it creates a small water seal that prevents unpleasant smells from escaping from your internal waste pipes. As part of your household plumbing, it also helps ensure wastewater flows away smoothly and safely.

Waste traps are essential because they:

  • Maintain a clean, odour-free home by preventing smells from collecting around fixtures

  • Support good hygiene by keeping waste pipe vapours contained

  • Help prevent minor build-ups in the immediate plumbing beneath sinks and basins

  • Protect surrounding units and flooring by preventing leaks from worn or damaged joints

Common Waste Trap Issues Requiring a Plumber

Over time, traps may fail. These are the tell‑tale signs that you may need a repair or full replacement and why early intervention is important:

  • Leaks or puddles under the sink, bath, or basin, often due to worn seals, loose joints, or cracks in the trap.

  • Persistent foul odours or musty smells coming from drains, indicating the water seal has failed or dried out.

  • Slow drainage or water backing up, debris build-up in the trap can restrict flow, or the trap might be misaligned.

  • Visible damage or corrosion, especially on metal traps, metal traps can degrade over time and lose their watertight seal.

  • Unusual noises such as gurgling when water drains, a sign that the trap’s water seal is compromised, or there’s a problem further down the drain line.

If you spot any of these, it’s wise not to delay. A leaking trap can cause damp, damage to cabinetry or floors, and unpleasant smells, often before you realise there’s a problem. Simply give us a call on 0808 250 9949 and we’ll get it sorted!

Maintenance & Prevention: Extend the Life of Your Trap

A little proactive maintenance can go a long way in preventing issues and ensuring your waste trap works reliably:

  • Clean regularly: Rinse the trap with hot water occasionally and remove any hair, grease, or soap residue before it builds up.

  • Run water regularly in seldom-used sinks or utility rooms, this keeps the water seal intact, preventing odours if the trap dries out.

  • Inspect for leaks or damage annually. Check for damp patches, corrosion, loosened fittings, or signs of wear around seams and compression joints.

  • Avoid harsh chemical cleaners that might corrode metal traps or degrade seals. Opt for mild detergents or natural cleaning solutions.

  • Use a strainer in sinks to catch food, grease, or debris before it enters the trap. This helps avoid blockages and reduces cleaning frequency.

Waste Trap Replacement FAQs

What is a waste trap?

Waste traps are crucial pieces of waste pipework for sinks, baths and most household appliances which use water. They carry the sink’s dirty water away from your property after use and ensure that no nasty smells or bacteria can get back in to your home by creating a water seal.

Why is my waste trap leaking?

If the leak is coming from a join between pipes, it may just need tightening. If that doesn’t work, one of the seals inside the waste trap might be worn or the trap may be blocked causing waste water to overflow. A plumber will be able to assess the cause for you and repairs the issue. 

 

Why does my waste trap smell even when water is running?

Odours usually indicate a damaged or dried-out trap seal. It could also be caused by blockages or improperly installed piping. Contact a professional plumber to assess and resolve the problem before it worsens.

How can I prevent waste trap blockages?

Regular cleaning, using sink strainers, avoiding grease and food scraps going down the drain, and running water through seldom-used sinks can all help prevent blockages. If problems persist or you’re unsure how to maintain your waste trap, contact a professional plumber for support.

Need some help and advice?

Our teams are experts in all things plumbing – so here they share some of their tips, guidance and advice with you.

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Fiona Ludlow
October 12, 2026
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Metro plumb was contracted by Thames Water to back-flush our mains connection as we had no water. The contractor called when he was on his way, was polite and considerate. He carried out the task as requested. When this did not solve the problem, he continued to explore other possibilities with us until water supply was successfully restored. We are very grateful for his help and his problem solving approach and highly recommend this company based on this experience.
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galexy gamer
October 12, 2026
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Brilliant
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The Artknowitall
October 12, 2026
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What a wonderfully helpful and very professional plumber! Thank you for being so efficient and explaining it all kindly!👌
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steve switzer
October 12, 2026
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Excellent very polite efficient great guy
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Sara Scarrott
October 10, 2026
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I can’t comment on the price as Thames Water requested they attend my property after a pipe burst. However the gentleman that came out to me was very nice friendly and polite. Talked me through what he was needing to do and when he left he left no mess! All in all very good first impression of the company
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Michele Dashwood
October 9, 2026
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I had a visit from 2 plumbers who were both lovely good at their job and carried out speedy inspection and repair. Both were very friendly, respectful and polite.
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Louise “Welshcake”
October 9, 2026
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Had a problem due to a recent Thames Water burst pipe and they made a referral to this company. They were fab and came out the same day and sooner than the given estimated time frame. My problem was fixed super quick. Efficient and friendly service from the technician. I can't comment on the cost as it was covered by TW, but I'd happily use this company again. Thank you.
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Andrea Connor
October 8, 2026
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A really fast response to our request for drain cleaning and camera drain check . Ryan was really knowledgeable and helpful and would highly recommend him .
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Nadeesha Dabare
October 8, 2026
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Really happy with the service! Bryan came out and, after the initial plunging didn’t work, he found the actual issue with the main water line and fixed it. He handled everything really well, and the water is now draining perfectly with no blockage. Great service and highly recommend Bryan! ⭐⭐⭐⭐⭐
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Robin Biggs
October 6, 2026
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Did a fantastic job in a quick manner and answered my layman’s questions
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bob bob
October 6, 2026
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Very pleasant man and explains what had broken
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Matt Goodall
October 5, 2026
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Cliff called to let us know he was on his way, was very helpful and just got on with the work. Great service from these guys – easy and fast.
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Michelle McMahon
October 5, 2026
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Joe can out to us due to a leak and identified the problem straight away, he picked up the parts and fix it straight away. He was so professional and really knew what he was doing and explained with great confidence.
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Mrs S Can
October 3, 2026
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Exceptional and selfless service! Kyle went above and beyond to help us during a tricky situation! Unbeknownst to us we had a damaged a pipe for years leading to a bedroom radiator, yoday ehile having some decorating done it was found and while waiting for the council to send someone to help, Kyle, who was working nearby, stepped in. He wasn’t obligated to assist as he wasn’t assigned to us, yet he kindly fixed the issue on the spot. His professionalism and empathy were outstanding, and he saved us a lot of stress. An absolute credit to his team! Please give him a payrise or promotion!!!!! He is an absolute asset to your team!!!!!! Kyle, thank you so much! If the world was made up of more people like you, it'd be a much nicer place to live!!!! Thank you!
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Rajesh Munglani
October 3, 2026
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We had a sudden loss of water into our house. Our usual plumbers had no idea what was happening. The water supply company said it was our problem. Metro Plumbing came three times and worked out that it wasn’t a dropped valve or anything and did blowback 7 times And eventually managed to Dislodge a 4 foot section of matted Tree root from inside our Water Main! There were sudden restoration of cold water through the mains pipe into the house. Honestly, without them, we would be stuck without water! They were all very pleasant and courteous and listened to the complex Story of all the previous investigations. We now need to work out where the Tree root got into the Main water supply, but that’s another matter! They came three times and spent many many hours so the price I paid in fact was incredibly reasonable

Speak to a plumber at Metro Plumb 0800 415 514