Tips & Advice

What’s the Holdup? The Most Likely Causes of a Blocked Drain

A blocked drain is one of the most feared household problems, being both a health risk and an obnoxious, embarrassingly visible mess. They are also incredibly common, with a variety of common causes which can strike suddenly and without warning in any home. It is important to stay positive and proactive when your drain seems to be blocked; if household drain cleaner doesn’t help, it’s time to call in a qualified professional. Here are some of the most common types of blockage that Curran Plumbing deal with on a daily basis:

Tree roots

One of the harder blockages to predict, tree roots often reach out to drain pipes in search of water. If they crack the pipe open a hard-to-reach blockage can be created, requiring specialist gear to repair.


In autumn there can be a tremendous amount of fallen leaves simply lying around; if a mass of them are swept into a drain together they can easily become caught and form a blockage.


Hair blockages build up over time, as clumps and strands of hair stick together in the drain until a stubborn mass forms and blocks it up. If you’re worried, you can buy special hair-catching drains – particularly useful for showers.

Grease & Fat

Greasy and fatty substances, such as runoff from kitchen pans, have a strong tendency to leave fatty deposits on the insides of pipes; over time, this creates a disgusting mass which obstructs the drain and causes a blockage. Kitchen drains in particular suffer from these blockages.


There is an unfortunate tendency for people to flush almost anything which happens to be in the same room as a toilet, as though the sewage pipe is a garbage disposal. However, many toiletries are terrible for the health of your drains. Nappies especially swell up when exposed to water, and can easily block a drain; sanitary wipes are also prime culprits, since they do not break down in the drain as toilet paper does.

Random Objects

While it’s true that the above are the most common causes of drain blockage, there are still plenty of blockages caused by toys, clothing, towels, or other seemingly random items which find their way into drains. Much of this can be blamed on the curiosity of small children, but sometimes it’s just a murky mystery. Luckily, a professional plumber doesn’t need to understand how a blockage occurred to remove it, so as long as you call one in quickly, none of these issues should trouble you for long.

No Call Out Fee*

We charge no call out for any job booked for normal office hours.

Serving The Community For 30 Years

Serving Wollongong, Shoalhaven, Illawarra and Sutherland Shire.

Award Winning Family Owned Business

We have earned countless awards of excellence from within our industry and from highly respected consumer groups.

Rated 4.9 Stars

Rated 4.9 Stars with 350+ reviews, Curran Plumbing is a name you can trust.

What Our Customers Say

Testimonials from our satisfied customers

Highly Rated


Out of 5


Overall rating of 549
1st-party reviews

Gordon M
July 18, 2022
Read More
Currans supplied us with constant updating of the project and when completed arranged for an inspection of the completed works.
Mitchell F
July 16, 2022
Read More
From the first phone call Curran plumbing services were professional, showed up on time for scheduled quote , then me updated when the job was going to be completed . On the day of install all of the staff were well trained , well spoken and installed my new instantaneous gas hot water system like they were installing it in their own home . The quality in detail to make sure I was satisfied didn’t go unnoticed. At the end of the day I feel like I have gained a plumber for life . 100% recommend.
InJect A Joint V
July 13, 2022
Read More
Luke was a Complete Gentleman and he explained every detail to my wife and i!! On this basis we excepted his Quote on the Spot and told him to go ahead and install our Brand New Australian made Hot Water System!! It was all Done that afternoon with Expert Precision d we had Hot water by 4pm!! Absolutely Marvellous Well Done! Sid you should be Very Proud of the Workmanship that Luke Performed!!
Brian D
July 13, 2022
Read More
From my first contact with your company to completion of the job was only a few days tree roots in the sewer pipes gone, big thanks to your team.
David Collins
July 11, 2022
Read More
Hi it's Dave from Dapto for Block drain problem, Part of Sewer drain renewal and ground was leveled nice & looks good, kitchen drain came apart and was reconnected all services where friendly and good communication excellent work. Thank you
Kingfisher Maritime
July 10, 2022
Read More
I found Josh from Curren Plumbing to be very honest and trustworthy in the work he carried out at my home. Josh communicated everything he was going to do and the results of these actions in a manner I was able to understand. I was happy with the work Josh did at my home.

Available 24/7

Wollongong, Shoalhaven, Illawarra and Sutherland Shire

How can we help you?

When did you want this service?

What are your contact details?

Your Address