5 Common Causes of Blocked Drains and How to Prevent Them

Posted by Blocked Drains Plumbers Sydney on 10 Oct 2025

Blocked drains are an inconvenience that could disrupt your everyday life. They can cause flooding, bad smells, and even health hazards. If they are not addressed promptly, blocked drains can cause grave problems to your plumbing system, which can lead to expensive repairs or replacements.

Key Takeaways

  • Blocked drains can disrupt your routine and cause water damage, bad odours and even health hazards.
  • Grease, oil and fat accumulations can stick to the pipes’ walls causing blockages. Avoid pouring grease down drains or use soap and hot water for cleaning dishes.
  • The roots of trees naturally expand in the ground to find nutrients that could cause severe damages and blockages to pipes leading to flooding; regularly keep trees in the vicinity of drainage systems by trimming them.
  • The flushing of non-biodegradable products like wet toiletries, wipes, etc. could cause unpleasant odors emanating around toilets/bin areas; be sure to take care to wash your toilet paper in the toilet.
  • Hair

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

Cause 1. Grease, oil and Fat buildup

Fat, grease, and oil might appear to be harmless substances to pour down the drain however, over time, they begin to accumulate on the walls of pipes causing obstruction. If this happens, water is unable to flow freely through the drainpipes. The solution is to avoid spilling grease down the drain or make use of hot water and soap when cleaning dishes because it assists to break down grease-based substances.

Cause 2: Tree Roots

Over time tree roots naturally expand into the soil in search of nutrients, which implies that they expand towards underground pipes. Once inside these pipes trees roots can cause a lot of damage and can completely block them leading to flooding. It’s crucial, therefore, if you are near trees to maintain their growth around drainage systems by trimming them in a regular manner.

Cause 3: Item that has been thrown away

It’s not difficult to conclude that flushing biodegradable products such as wet towels, sanitary wipes and so on. shouldn’t cause a lot of problems over the long haul, However, if a large amount of these items are flushed into toilets, they can build up, pushing other items aside and in the way of pipes. This could cause unpleasant odors to emanate around toilets/bin areas too! Make sure to remember what should be flushed, and what shouldn’t (i. the only toilet paper needs to have to be flushed).

Cause 4: Hair

Additional Information

Our 5 Star Service Promise to You

Sydney Drain Plumbing Services

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:

  • CCTV Drain Inspections
  • Drain Clearing & Drain Cleanin
  • Drain Repairs
  • Pipe Relining
  • Blocked Stormwater Drains
  • Blocked Sewer Drains & Blocked Pipes
  • Blocked Sinks & Blocked Toilets
  • Clogged or Blocked Shower Drain

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 Sydney cleared today, contact Blocked Drains Plumbers Sydney now and speak to one of our friendly team members.

8 Reasons To Hire Blocked Drains Plumbers Sydney

  • 24 Hours A Day, 7 Days A Week
  • Price Up-Front, No Hidden Fees
  • Prices You Can Trust
  • Quality Workmanship Guaranteed
  • Great Reviews & Reputation
  • We’re Personable & Friendly
  • Experienced & Licenced Team
  • Get a Quote With No Obligation

We Provide 24/7 Emergency Plumbing

No one ever expects to experience a plumbing emergency, but when it does happen, you need a reliable plumbing service that can help you resolve the issue as quickly as possible.

At Blocked Drains Plumbers Sydney, we are always here for our customers, day or night, weekends or holidays. We understand that plumbing emergencies can happen at any time, and we are always prepared to help.

If you are experiencing a plumbing emergency, please do not hesitate to call us. We will dispatch one of our experienced plumbers to your home or business as soon as possible.

We will work diligently to resolve the issue and get your life back to normal as quickly as possible, contact us today.

Blocked Drains

Blocked Drains

Drain Inspection

Drain Inspection

Drain Cleaning

Drain Cleaning

Drain Repairs

Drain Repairs

About Us &

What We Do

When it comes to plumbing, you want to make sure you’re working with a qualified professional. At our company, we are licensed and insured professionals who are dedicated to providing quality plumbing services.

We’re here to help with all of your plumbing needs, such as blocked drains, CCTV drain inspections, drain repairs and pipe relining.

We understand that plumbing problems can be disruptive and expensive. That’s why we offer 24×7 emergency service, so you can get the help you need when you need it most.

We also have a 100% satisfaction guarantee on all of our work, so you can be confident that you’re making the best decision for your home.

Identify tree roots in your pipes with our cctv inspections and nabish them from your drains with our pip repairs and pipe relining.

Blocked Drain, CCTV Inspections & Pipe Relining
Make an Enquiry

Request a Quote

Fill out the form below to get in touch or call us today on
0488 881 104