General plumbing in Cardiff.
From hidden leaks to dripping taps, low pressure, and blocked drains — our team handles it properly, with permanent fixes rather than quick patches that fail again next month.
At a glance JM Plumbing Services handles general plumbing across Cardiff and Barry — leaks, taps, drains, and pipework. We don’t carry out gas or boiler work.
What’s covered — and what isn’t?
We cover the everyday plumbing issues that come up in most homes — leaks, dripping taps, low water pressure, and blocked drains — and we focus on finding the actual cause rather than patching the symptom. We’re upfront about one thing: JM Plumbing Services isn’t Gas Safe registered and doesn’t carry out gas or boiler work. If a job turns out to need that, we’ll say so honestly rather than take it on regardless.
Getting the actual cause right the first time matters more than it might seem — a leak that's patched without finding the source, or a drain that's cleared without addressing what caused the blockage, tends to come back within months. We diagnose properly rather than treat the symptom, which usually works out cheaper for you over time even if it takes slightly longer on the day.
If your plumbing issue is inside a bathroom that needs wider work, see our bathroom renovation page.
Signs you might have a hidden leak
- An unexpectedly high water bill with no obvious explanation
- Damp patches or a musty smell with no clear source
- The sound of running water when every tap and appliance is off
- Mould growth on walls or ceilings, especially in a corner or below a bathroom
- A warm patch on the floor, which can point to a leak in underfloor pipework
What’s included
- Leak detection and repair, hidden and visible
- Dripping tap and fitting repairs
- Low water pressure diagnosis and fixes
- Blocked drain clearing
- A free, no-obligation quote before any work is booked
Plumbing FAQ
Questions about general plumbing.
What plumbing problems do you fix?
Hidden and visible leaks, dripping taps, low water pressure, and blocked drains — the everyday plumbing issues that come up in most homes. We focus on permanent fixes, not a quick patch that fails again next month.
Do you do gas or boiler work?
No — JM Plumbing Services doesn't carry out gas or boiler work, and we're not Gas Safe registered. If your issue turns out to be gas or boiler related, we'll tell you honestly and point you toward getting a Gas Safe registered engineer, rather than take on work outside what we're qualified for.
What should I do if I notice a leak?
Turn off the water supply to that area straight away — look for the isolation valve under the toilet or sink, or use the main stopcock if needed. Don't ignore it, even if it seems minor; water damage builds up quickly behind tiles and under floors. Give us a call and we'll advise on the best next step.
Why is my water pressure low?
Could be a partially closed valve, a build-up of limescale or debris in pipework, or an issue further back in the supply. We'll diagnose the actual cause rather than guess, since low pressure can have several different sources that each need a different fix.
What usually causes a blocked drain?
Most blockages come from a build-up of grease, hair, soap scum, or objects that shouldn't have gone down the drain in the first place, while tree roots can cause problems in older external drainage. We'll identify what's actually causing it rather than just clear the immediate blockage and leave the underlying cause to do the same thing again.
Can a hidden leak cause damage to my bathroom or the rest of my home?
Yes — a leak left unaddressed can damage flooring, ceilings below the leak, and cause mould or even structural issues if it goes on long enough. It's worth getting a suspected leak looked at promptly rather than waiting to see if it gets worse.
Got a plumbing problem?
Free quotes for leaks, taps, drains, and pipework across Cardiff and Barry.