Tuesday Tips: Practical Drainage Advice You Can Use

September 16, 2026
Tuesday Tips: Practical Drainage Advice You Can Use

At MTP Renovations, we believe good renovation advice shouldn't only be available when something goes wrong.

That's why we've created Tuesday Tips — a regular series of short, practical tips designed to help homeowners, landlords, property managers and businesses better understand their homes, renovations, drainage and maintenance.

Every Tuesday, we share a simple piece of advice on our Facebook page covering topics such as home renovations, drainage, plumbing, wastewater, stormwater, maintenance and common problems that can affect your property.

🎥 Watch this week's Tuesday Tip on Facebook:
Watch this week's Tuesday Tip on Facebook

And if you want to see future Tuesday Tips as they're released, follow our Facebook page.

Why Tuesday Tips?

Drainage problems often start long before you see wastewater coming back up through a drain.

A slow-draining sink, recurring blockage, unpleasant smell or gurgling toilet can all be early warning signs that something isn't quite right.

Our Tuesday Tips are designed to give you quick, useful information that you can actually apply to your own property.

We cover the things property owners regularly encounter — from drainage and maintenance through to issues that can arise during home renovations.

If you're planning a renovation, our renovation services in Auckland cover everything from design and project management through to kitchens, bathrooms, extensions, exterior work and more.

Don't Ignore a Slow Drain

One of the most common mistakes homeowners make is treating a slow drain as something that can simply be ignored.

A drain that is becoming progressively slower may indicate a restriction developing somewhere in the pipe.

Initially, water may still disappear down the drain. But as the restriction gets worse, you can eventually end up with wastewater backing up into your home or overflowing from an external gully.

If you're experiencing drainage problems, repeatedly clearing the blockage may only provide a temporary solution. Finding the underlying cause is often the better approach.

What Causes Drainage Blockages?

Fat and Grease

Kitchen fats, oils and grease can stick to the inside of drainage pipes. Over time, they can combine with other material and reduce the effective diameter of the pipe.

Rather than putting cooking oil or fat down the sink, dispose of it appropriately.

Tree Roots

Tree roots are another common cause of drainage problems.

Roots are attracted to moisture and can enter drainage pipes through existing cracks, damaged joints or small openings. Once inside, they can continue to grow and create a restriction.

If a particular drain repeatedly blocks, tree-root intrusion is one of the potential causes that should be investigated.

Wipes and Inappropriate Items

Toilets aren't rubbish bins.

Wipes, sanitary products, nappies and other materials can cause serious blockages. Even products marketed as "flushable" can behave differently from ordinary toilet paper once they enter the wastewater system.

Damaged Pipes

Sometimes the problem isn't what has gone down the drain at all.

Older drainage systems can suffer from cracked, displaced or collapsed pipes. These problems can allow roots and soil to enter the system or prevent wastewater from flowing correctly.

In these situations, repeatedly clearing the blockage may only provide a temporary solution.

Drainage and Renovations

Drainage is particularly important when you're planning an extension, alteration or major renovation.

Before beginning Auckland renovation projects, it's worth establishing where existing wastewater and stormwater pipes are located.

Building work can affect existing drainage routes, particularly when foundations, new slabs, extensions or landscaping are being installed.

Planning the drainage requirements early can help avoid having to make expensive changes later in the project.

For homeowners undertaking house renovations in Auckland, drainage should therefore be considered alongside other services such as plumbing, electrical work and structural alterations.

Stormwater and Wastewater

Stormwater and wastewater are different systems and should not simply be treated as the same thing.

Stormwater is rainwater runoff, while wastewater comes from toilets, showers, sinks, washing machines and other household uses.

Incorrect connections can create significant problems for both the property and the wider drainage network.

If your renovation involves changes to downpipes, paving, extensions or landscaping, make sure drainage requirements are considered as part of the project.

Our exterior and landscaping renovation services specifically consider plumbing and drainage requirements as part of outdoor renovation projects.

What About Your Gully Trap?

Your gully trap plays an important role in your property's wastewater system.

It should be kept clear and properly maintained so wastewater can flow freely and the system can operate as intended.

A blocked or poorly maintained gully can be an early indication that something is wrong with the drainage system.

If you're undertaking property maintenance in Auckland around bathrooms, kitchens, extensions or outdoor areas, it's worth checking how the proposed work will interact with your existing drainage.

Bathroom Renovations and Drainage

Bathrooms are one area where drainage and renovation work often go hand in hand.

Changing the position of a toilet, shower, bath or basin can involve changes to plumbing and waste pipes.

Our bathroom renovations in Auckland include plumbing and drainage upgrades, waste-pipe changes and other infrastructure considerations that can be important when modernising an older bathroom.

Planning these requirements early can help ensure the finished renovation is both attractive and functional.

Interior Renovations and Existing Services

Drainage isn't only an external issue.

When walls, floors or rooms are being altered, it's important to understand where existing plumbing and drainage infrastructure runs.

Our interior renovation services in Auckland cover everything from kitchens and bathrooms through to larger internal transformations.

Understanding existing services before construction starts can help avoid unexpected complications during the renovation.

CCTV Can Help Find the Real Problem

When a drainage problem keeps returning, a CCTV drain inspection can provide a much clearer picture of what's happening underground.

A drain camera can help identify problems such as:

  • Tree-root intrusion
  • Cracked pipes
  • Broken joints
  • Pipe displacement
  • Build-up inside the pipe
  • Collapsed sections
  • Foreign objects
  • Other restrictions

Instead of guessing where the problem is, an inspection can help identify the location and nature of the issue.

Professional drainage specialists can then determine what needs to be done to address the underlying problem.

Tuesday Tips Are About Prevention

The purpose of our Tuesday Tips isn't to turn everyone into a builder or drainage specialist.

It's about giving property owners enough information to recognise potential problems and understand when professional help may be required.

A little knowledge can make a big difference.

Knowing what not to put down a drain, recognising the warning signs of a developing blockage and understanding the difference between stormwater and wastewater can all help protect your property.

And when you're planning a renovation, understanding your existing services can help you make better decisions before construction begins.

Follow Our Tuesday Tips

If you find these tips useful, make sure you follow us on Facebook so you don't miss the next one.

Our Tuesday Tips are short, practical and based around real issues that property owners encounter.

🎥 Watch this week's Tuesday Tip on Facebook

Follow our Facebook page for next week's tip and more practical renovation and property advice.

Have a renovation, drainage or property question you'd like us to cover in a future Tuesday Tip? Let us know.

Planning a Renovation?

If you're considering a renovation anywhere in Auckland, talk to the MTP Renovations team about your project.

From kitchens and bathrooms to extensions, interiors, landscaping and complete home renovations, our team can help coordinate your project from planning through to completion.

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