Top 4 Plumbing Issues You Should Never DIY

Rear View Of A Woman Trying To Stop Water Leakage From Sink Pipe In Kitchen.

Plumbing problems have a sneaky way of showing up right when you least expect them. It’s tempting to roll up your sleeves and tackle them yourself, especially when a drippy tap or clogged drain doesn’t seem too serious. But plumbing can be tricky, especially in older New Zealand homes, where DIY fixes often turn a small hassle into a full-blown disaster.

Here’s a list of the top plumbing problems you should absolutely not DIY, no matter how tempting it seems – and why these are jobs best left to the experts.

 

1. Burst Pipes 

Burst pipes aren’t just annoying; they’re pure chaos. You might think, “How hard can it be to stop a bit of water?” But pipes can burst for all sorts of reasons, from temperature changes to wear and tear – and when they do, it’s like having your own personal waterfall inside your walls.

Why DIY is a Bad Idea: Trying to patch a burst pipe yourself is about as effective as using a plaster on a sinking ship. A temporary fix like tape or sealant might hold for a minute, but once pressure builds, it’s game over. Plumbers, on the other hand, use industrial-grade sealants or even pipe relining, which can cost a few thousand dollars – but it saves you from long-term damage.

What Can Go Wrong:

  • Water Damage: You patch it, the patch leaks, water gets in the walls, and soon you’re dealing with soggy floors, mould, and rotting drywall. 
  • Insurance Complications: Many policies won’t cover DIY fixes that backfire, so if the leak damages your home, you might be out of luck on coverage.

 

2. Clogged Drains and Blocked Pipes 

Blocked drains are an extremely common issue, especially in older New Zealand homes. Hair, soap scum, cooking grease, and even outside elements like garden soil can create blockages. While a plunger might work for minor clogs, some require advanced tools and skills.

Why DIY is a Bad Idea: Sure, you could try clearing it with some elbow grease, but plunging too hard or using harsh chemicals can actually damage your pipes. Professional plumbers have access to drain cameras, hydro-jetting, and other specialised gear that costs a hefty sum to rent – and they know how to use it without wrecking your plumbing.

What Can Go Wrong:

  • Pipe Damage: Forcing clogs with DIY solutions can crack or wear down old pipes, especially if made from older materials.
  • Recurrence: DIY methods often don’t address the root cause of the clog. Plumbers use equipment to inspect the entire drain system, preventing future blockages.

 

3. Water Cylinder Repairs

Water cylinders seem straightforward: a tank, some pipes, some buttons. But fixing one is no simple task, especially when you throw gas or electricity into the mix. DIY-ing a water heater repair can lead to scalding hot water, gas leaks, or even explosions.

Why DIY is a Bad Idea: Water heaters require knowledge of plumbing, wiring, and, in some cases, gas lines. In New Zealand, the law actually requires a certified professional to handle most of the repairs that involve gas because they’re considered ‘high risk’. DIY-ing it could void warranties, put your safety at risk, and lead to some pricey fines.

What Can Go Wrong:

  • Safety Risks Galore: Faulty installations can cause carbon monoxide leaks, fire hazards, and scalding water – none of which are good news.
  • Costly Replacement Costs: Tampering with a water heater can void the warranty, so if it breaks down, you’re footing the bill.
  • Future Safety Checks: Plumbers check the temperature and pressure relief valves and make sure everything’s running safely – things you might not even know to check.

 

4. Sewer Line Issues 

Sewer line problems are every homeowner’s nightmare. Common causes include tree roots infiltrating old pipes, soil shifting, or just general pipe wear and tear. If you notice frequent clogs, slow drainage, or foul smells, your sewer line might be to blame.

Risks of DIY: Without professional equipment, it’s nearly impossible to clear sewer line blockages or repair damaged pipes. Sewer line jobs require augers, hydro-jetting, or even pipe relining tools, which can cost thousands of dollars to rent and operate. Attempting this without expertise can lead to backflow issues, property damage, and serious health risks.

What Can Go Wrong:

  • Biohazard Concerns: Sewer lines carry waste that can be hazardous to health. Professionals have the training and protective gear needed for safe handling.
  • Backflow Risks: An improper DIY repair could lead to sewage backflow, which can be dangerous and costly to fix. Certified plumbers know how to prevent backflow and ensure proper drainage.
  • Expensive Mistakes: Damaged sewer lines are some of the most costly repairs. A professional assessment can save you thousands in potential excavation and replacement costs.

 

Want Some Professional Help?

Plumbing might seem like a DIY-friendly area, but many jobs involve risks, specialised tools, and the kind of expertise only professionals possess. Burst pipes, clogged drains, water heaters, leaky toilets, and sewer lines are all issues where attempting a fix yourself could end up costing far more in the long run.

Need expert help? Reach out to Plumber.co.nz. We understand New Zealand’s unique housing and plumbing needs and are always ready to provide prompt, reliable service to get things flowing smoothly again.

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