5 Common Causes of Blocked Drains and How to Prevent Them

Posted by Perth Blocked Drains Plumbers on 7 Nov 2025

Blocked drains are a source of frustration that could disrupt your everyday life. They can result in water damage, bad smells, and even health hazards. If not promptly dealt with blocked drains can lead to severe problems for your plumbing system, which can lead to costly maintenance or repairs.

Key Takeaways

  • Drains that are blocked can interrupt your routine and result in flooding, unpleasant smells, and even health issues.
  • Fat, oil and grease build-up can clog the walls of pipes causing blockages. Avoid pouring grease down the drain. Alternatively, use soap and hot water while cleaning dishes.
  • The roots of trees naturally expand in the ground to find nutrients that could cause severe damage and completely block pipes leading to flooding; regularly maintain trees near drainage systems by trimming them.
  • Wet towels, wipes and sanitary pads etc. can result in nasty smells emanating from bins and toilets. only wash toilet papers down toilet.
  • Hair

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

Cause 1: Grease, Oil and Fat Buildup

Grease, oil and fat may appear like harmless materials to flush down the drain, but they can build up over the insides of the pipes, causing an obstruction. As a result it is impossible for water to flow freely through drainpipes. It is best to avoid throwing grease into the drain. Alternatively, make use of hot water and soap to wash your hands when cleaning dishes as it helps remove greasy substances.

Cause 2. Tree Roots

As time passes, tree roots naturally extend into the ground seeking nutrients. This implies that they expand towards underground pipes. Once they’re inside, the tree roots can cause massive damage and could completely block them, causing flooding. It’s important therefore if you have trees nearby that you regularly maintain the growth of your trees in the drainage system by trimming the trees regularly.

Cause 3: Item that has been thrown away

It’s easy to assume that flushing biodegradable products such as wet towels, sanitary wipes and so on. will not cause any major problems in the end, but when too many of these items go in toilets, they’ll accumulate pushing others aside blocking pipes – this can cause a bad smell to be released around bins and toilets! Always remember what should be flushed and what shouldn’t (i. it is only toilet paper needs 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 Perth cleared today, contact Perth Blocked Drains Plumbers now and speak to one of our friendly team members.

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