Being Picky with Plumbing Work in Your New House
Updated 14 July 2026 · DublinPlumbing
Moving into a new house is both exciting and stressful, especially when it comes to making sure everything works as it should. Plumbing is one of those areas where being a bit picky can save you a lot of hassle (and money) down the line.
Whether you’ve just bought a new build or moved into an older property, knowing how to check for quality plumbing work is essential. Here’s how to look over the plumbing in your new home, spot potential issues, and make sure everything meets your standards.
Start with a Visual Inspection
Begin by walking around your house and visually checking exposed pipes, taps, and appliances. Look for obvious signs of leaks such as water stains, mould, or corrosion on pipes and joints. Check under sinks, behind toilets, and around water heaters for any damp patches or puddles.
Don’t forget to check ceilings and walls for any discolouration, which could indicate a hidden leak from above. If anything looks off, make a note for further inspection.
Test Water Pressure and Flow
Turn on all taps and showers one by one, and check the water pressure and flow. The water should come out strong and steady, not trickle or splutter. Low pressure could point to a blockage, a poorly installed pipe, or an issue with the mains supply.
Flush all toilets and make sure they fill and empty properly, without running on after flushing. If you notice slow drainage, gurgling, or persistent running, it could be a sign of a problem with the cistern or waste pipes.
Check for Proper Installation and Quality
Inspect pipework to ensure it’s neatly installed and well-supported. Pipes should be straight, not kinked or crushed, and properly clipped to walls or joists. Pay attention to joints and fittings: they should be tight, with no gaps or signs of water ingress.
Look at the materials used—copper, modern plastic (like PEX), or older lead pipes. If you spot lead pipes, consider replacing them as they are not recommended for drinking water.
It’s also wise to check that isolation valves are fitted to sinks, toilets, and appliances. These small valves make it easier to carry out repairs in the future.
Test for Hidden Leaks and Damp
Not all leaks are easy to spot. If possible, turn off all taps and appliances and check your water meter. If it’s still moving, you may have a hidden leak somewhere in the system.
Notice any musty smells, persistent damp, or spots of mould, especially in corners or behind appliances. These could be signs of water escaping from pipes or joints inside walls or floors.
Some leak detection jobs, especially involving pipes hidden behind walls or under floors, are best left to professionals. If you’re unsure, DublinPlumbing can help trace and repair leaks safely.
Know When to Call a Professional
While many visual checks and simple tests can be done yourself, some aspects of plumbing require a qualified tradesperson. For example, any work involving gas (like boilers) must be carried out by a Registered Gas Installer (RGI).
If you’re uncertain about the quality of work, spot materials you don’t recognise, or find evidence of previous DIY jobs that look suspect, don’t hesitate to get a professional opinion. It can save you from costly repairs in the future.