What Causes Blocked Drains in Perth Homes?

Blocked drains are one of the most common plumbing issues faced by Perth homeowners. While some blockages develop slowly over time, others can occur suddenly and cause serious drainage problems throughout the property.

Understanding the common causes of blocked drains can help you identify issues early and avoid costly repairs.

1. Tree Root Intrusion

Tree roots are one of the leading causes of blocked drains in Perth.

Roots naturally seek out moisture and can enter small cracks or joints in underground pipes. Once inside, they continue to grow, restricting water flow and eventually causing severe blockages.

Common signs include:

• Slow draining fixtures

• Gurgling sounds

• Frequent drain blockages

• Sewage odours

  

   

2. Fat, Oil and Grease Build-Up

Many kitchen drain blockages are caused by fats, oils and grease being washed down the sink.

Although these substances may be liquid when hot, they cool and solidify inside the pipework. Over time they collect food scraps and other debris, creating stubborn blockages.

3. Hair and Soap Scum

Bathroom drains often become blocked due to a combination of hair, soap residue and personal care products.

As these materials accumulate, they reduce the diameter of the pipe and restrict water flow.

This is especially common in:

• Showers

• Baths

• Bathroom basins

4. Foreign Objects

Many drain blockages occur when unsuitable items are flushed or washed down drains.

Common examples include:

• Wet wipes

• Paper towels

• Sanitary products

• Cotton buds

• Children's toys

• Excessive toilet paper

Even products labelled as "flushable" can contribute to blockages.

5. Damaged or Collapsed Pipes

Older homes in Perth may have ageing drain pipes that have cracked, sagged or collapsed over time.

Damaged pipes can catch debris and restrict water flow, leading to recurring blockages that cannot be resolved with basic drain cleaning.

A CCTV drain inspection is often required to identify these problems.

 

6. Sand and Debris

Perth's sandy soil can sometimes find its way into damaged underground pipework.

Construction debris, dirt and sediment can also accumulate inside drains, reducing their ability to carry wastewater effectively.

Signs You May Have a Blocked Drain

Common warning signs include:

• Slow draining sinks, showers or baths

• Gurgling sounds from pipes

• Unpleasant odours

• Water backing up into fixtures

• Overflowing outdoor drains

• Repeated drain blockages

How Can Blocked Drains Be Prevented?

While not all blockages can be avoided, homeowners can reduce the risk by:

• Avoiding pouring fats and oils down sinks

• Using drain strainers in showers and basins

• Only flushing toilet paper

• Scheduling regular plumbing CCTV drain inspections

• Addressing slow drains before they become completely blocked
  
  

  

   

Need Help With a Blocked Drain?

At Intec Plumbing & Gas, we help Perth homeowners diagnose and clear blocked drains quickly and efficiently.

Whether the problem is caused by tree roots, grease build-up or damaged pipework, our team can identify the cause and recommend the most effective solution.

Contact us today for professional advice and an obligation-free quote.