5 Common Causes of Blocked Drains and How to Prevent Them

Posted by Melbourne Blocked Drains Plumbers on 9 Nov 2025

Blocked drains can be a nuisance that can disrupt your daily life. They can result in water damage, bad smells and even health risks. If they’re not treated promptly blocked drains can lead to serious problems in your plumbing system, which can lead to costly maintenance or repairs.

Key Takeaways

  • Blocked drains can disrupt your day-to-day routine and lead to problems with water, bad smells, and even health issues.
  • The fat, oil and grease buildup can accumulate on the walls of pipes causing blockages. Do not pour grease down the drain, or use hot water and soap while cleaning dishes.
  • Tree roots naturally extend themselves into the ground searching for nutrients which may cause significant damage to pipes and even completely block them which can cause flooding. Ensure you keep trees in the vicinity of drainage systems by trimming them.
  • Wet towels, wipes and sanitary pads and so on. can cause unpleasant smells emanating from bins and toilets. only wash toilet papers down drain.
  • Hair

In this article, we will look at five common causes of blocked drains and how you can prevent them from happening.

Cause 1. Grease, Oil and Fat Buildup

Fat, grease and oil may appear like harmless materials to flush down the drain, but as time passes, they build up on the walls of the pipes causing a blockage. As a result then water cannot move freely through the drainpipes. The best solution is to refrain from throwing grease down the drain or use hot water and soap during cleaning dishes because it assists to break down grease-based substances.

Cause 2: Tree Roots

As time passes, tree roots naturally extend themselves into the ground in search of nutrients, which implies that they expand toward underground pipes. Once inside the pipes, tree roots can cause massive damage and may completely block them leading to flooding. It’s important therefore if you have trees in the vicinity that you maintain the growth of your trees in the drainage system by trimming them in a regular manner.

Cause 3: Unwanted items

It’s easy enough to believe that flushing biodegradable products such as wet wipes, sanitary towels etc. aren’t likely to cause major issues in the end, However, when a lot of these items go into toilets, they can accumulate pushing others aside blocking pipes – this can cause unpleasant odors to emanate around the toilets and bins too! Always be aware of what should be flushed and which shouldn’t (i. e only toilet paper should have to be flushed).

Cause 4 Hair

Additional Information

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Are you experiencing a clogged toilet, blocked shower drain, overflowing drains or an issue with your kitchen sink? We can help you sort out your drain blockage problem quickly and provide the following services:

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Clearing blocked drains can be difficult and it’s best to get a professional plumbing service involved to tackle it for you, To get your blocked drain in Melbourne cleared today, contact Melbourne Blocked Drains Plumbers now and speak to one of our friendly team members.

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