Prevent Blocked Drains Now: Know the Common Causes

Name: Blocked Drain Sydney
Brand: Blocked Drains Plumbers Sydney
Rating: 5 (3 reviews)

Posted by Blocked Drains Plumbers Sydney on 2 Nov 2025

Blocked drains can be a frustrating problem and cause many inconveniences. Blocked drains can cause unpleasant odors, slow drainage of water, and even sewage backups. Understanding the common causes of blocked drains will help you prevent them in the first place.

Blocked drains are caused by different reasons, and if not adequately addressed, can lead to costly repairs for your home or business. Here are five common causes of blocked drains and how to prevent them:

1. Foreign objects

Foreign objects such as food particles, hair, soap residue, and paper products can cause blocked drains. These materials stick together inside pipes forming a blockage that prevents water flow.

To prevent these blockages from occurring:

Cooking oil should be disposed of in the trash, not the sink
Do not pour coffee grounds or leftover food into the sink
Install drain covers in sinks, bathtubs, and shower stalls to prevent hair from accumulating
Use minimal toilet paper when flushing

2. Tree roots

Tree roots can often be found growing toward cracked pipes and pipe joints, where they can infiltrate the pipe and eventually block it completely.

To prevent tree root intrusion:

Hire professionals to properly install pipes so they’re level
Avoid planting trees near sewer lines

3. Grease buildup

Grease buildup is one of the most common causes of residential cookbook problems leading to blockages. Many people pour hot grease down their kitchen sink since it’s liquid form making it easily escapes from dishes but congeals quickly once it cools off deep inside your pipes causing stubborn clogs.

You can dispose of grease-laden oils and other greasy substances in your kitchen sink by emptying the trash into a garbage bin, rather than pouring it into your kitchen drainage system.

4. Structural damage

Blocked drains can be caused by cracked or collapsed pipes, whether they are due to weather changes or age. The following are signs of pipe damage:

Slowly draining water
Multiple blocked fixtures
Mold growth
Foundation cracks

To prevent structural damages:

Regular inspections of your sewer lines with CCTV inspections are recommended so that professional repair companies can detect and correct any problems.

5. Incorrect pipe installation

Incorrect pipe installation or poor design can also contribute to blocked drains as it sometimes leaves very tight bends in unscrupulous areas where large debris easily form blockages from accumulated waste.

Hire professionals to install pipes correctly and make sure they meet all standards.

Conclusion

If left unattended, blocked drains can cause serious problems. Be proactive about preventing blockages by taking preventative measures, hiring professionals for regular maintenance checks, following plumbing code requirements during constructions, placing catch baskets on screen traps in sink an drain shower outlets to capture any debris before it reaches the drainage system. Take care of your pipes today to ensure that they remain clear tomorrow and in years ahead.

The key takeaways

Here are some essential things you should remember after reading this article:

Foreign objects like hair, soap residue, paper products and food particles are common causes of Blocked Drains.
Tree roots can grow towards water sources like cracked pipes, causing complete obstruction within the pipe.
Blockages can be caused by grease buildup in your pipes.
Structural damages due to cracked or collapsed pipes due to age, weather or ground shifts impairing smooth flow of water.
Incorrect Pipe installations may leave very tight bends susceptible for large debris causing accumulative blockages. from wastes going through drainage system.
Hire only qualified-professionals plumbers for regular check ups instead of waiting for emergencies.
Follow standard local plumbing codes during construction.
To capture debris that does not reach the drainage system, place catch baskets on screens traps.