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 which can cause a disruption in your daily life. They can cause the destruction of your home’s plumbing, unpleasant odours, and even health hazards. If they are not addressed promptly blocked drains could cause serious issues in your plumbing system, leading to expensive fixes or replacings.

Key Takeaways

  • Blockages to drains can cause disruption to your day-to-day routine and cause problems with water, bad smells and even health dangers.
  • Fat, oil and grease build-up can clog the walls of pipes causing blockages. Avoid pouring grease down drains or use soap and hot water to wash dishes.
  • Tree roots naturally extend themselves into the soil to search for nutrients. This can cause massive damage to pipes and even completely block them which can cause flooding. Ensure you maintain the trees surrounding drainage systems by pruning them.
  • Flushing non-biodegradable items like wet toiletries, wipes, etc. can create unpleasant smells emanating from bins and toilets. just take care to wash your toilet paper in the toilet.
  • Hair

In this article, we will examine five of the most common reasons for blocked drains and the best way to stop them from happening.

Cause 1. Grease, oil and Fat Buildup

Fat, grease, and oil may appear like harmless materials to dump down the drain but as time passes, they build up on the walls of pipes, creating a blockage. When this occurs the water can’t flow freely through drainpipes. The best solution is to refrain from throwing grease down the drain or utilize soap and hot water when cleaning dishes, as this helps break down greasy substances.

Cause 2: Tree Roots

The tree’s roots gradually extend their roots into the earth seeking nutrients. This implies that they expand toward underground pipes. Once inside these pipes tree roots can cause substantial damage and even block them, leading to flooding. It is therefore essential if you have trees nearby to maintain the growth of your trees in the drainage system by trimming them regularly.

Cause 3: Item that has been thrown away

It’s easy enough to believe that flushing non-biodegradable items like toilet paper, wet wipes and so on. will not cause any major problems in the end, However, when a lot of these items are flushed in the toilets, they’ll build up, pushing other items aside and blocking pipes – this can create unpleasant smells around toilets/bin areas too! Always be aware of what should be flushed, and what shouldn’t (i. e only toilet paper should be flushed out).

Cause 4 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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