Common Causes of Blocked Drains and How to Fix Them

Blocked drains can be a major inconvenience, leading to unpleasant odors, slow drainage, and even flooding. Understanding what causes blockages and how to prevent or resolve them can save you time, money, and stress.

Why Do Drains Get Blocked?

Drains can become clogged for several reasons, many of which are preventable. Below are some of the most common causes and solutions to keep your plumbing system running smoothly.

1. Hair Build-Up

Hair is a frequent culprit for clogged bathroom drains, as it combines with soap residue to create stubborn blockages.

Solution: Use a hair catcher or drain strainer to prevent hair from going down the drain. If a blockage has already formed, try using a plumber’s snake or an unbent wire hanger to remove the hair. Alternatively, a drain cleaner designed for hair, such as Mr Muscle Drain Gel, can help dissolve the blockage.

2. Dirt and Mud

Dirt and mud from washing hands, clothes, or outdoor items can accumulate in drains and cause clogs.

Solution: Start by flushing the drain with boiling water to loosen the dirt. Follow up with a mixture of baking soda and vinegar to help break up the blockage. If necessary, use a drain rod for exterior drains.

3. Food Waste and Grease

Kitchen sinks often get clogged due to food particles, grease, and oil buildup.

Solution: Avoid pouring oil and grease down the drain. Instead, collect it in a container and dispose of it properly. If a blockage occurs, flush the drain with hot water and dish soap, followed by a sink plunger or drain snake. Installing a sink strainer can help prevent food debris from going down the drain.

4. Heavy Rain and Storm Debris

Outdoor drains can become overwhelmed by leaves, dirt, and debris during heavy rainfall, leading to blockages.

Solution: Use a drain rod to clear debris or a pressure washer with a drain cleaning attachment for tougher clogs. Installing drain covers can prevent leaves and dirt from entering the system.

5. Broken or Damaged Pipes

Cracks in pipes can collect debris, eventually leading to severe blockages or even collapse.

Solution: If you suspect a broken pipe, professional inspection is necessary. CCTV drain surveys can help diagnose the issue before repairs are made.

6. Excessive Toilet Paper Usage

Using too much toilet paper, especially thick or quilted varieties, can lead to clogs.

Solution: Use a toilet plunger to try and dislodge the blockage. If that doesn’t work, try a baking soda and vinegar solution, followed by hot water. For persistent issues, consider switching to a thinner toilet paper variety.

7. Mineral Deposits from Hard Water

Hard water can cause mineral buildup, such as limescale, which can restrict water flow in pipes.

Solution: Flush drains with boiling water and white vinegar to break down deposits. If limescale buildup is extensive, consider using a specialised descaler or installing a water softener.

8. Foreign Objects and Non-Flushable Items

Items such as wet wipes, cotton wool, sanitary products, or small objects can get stuck in the pipes.

Solution: If the object is visible, use a plumber’s grabber or drain snake to remove it. If the blockage is deep, professional assistance may be required.

How to Identify If the Blockage Is Inside Your Home

If only specific drains in your home are affected, the blockage is likely within your property. However, if multiple homes in your area are experiencing issues, the blockage might be in the public sewer system.

Who Is Responsible for Blocked Drains?

• Inside your property – You are responsible for fixing the blocked drain.
• Outside your property (public drains) – The local water authority is responsible. Contact your water provider if you suspect an external issue.

Preventative Tips to Avoid Blocked Drains

• Use drain strainers in sinks, showers, and bathtubs.
• Avoid pouring oil, fat, or grease down kitchen sinks.
• Only flush the three Ps – pee, poo, and toilet paper.
• Regularly clean drains using boiling water and baking soda.
• Keep outdoor drains clear of leaves and debris.

Need Professional Help?

If your drains remain blocked despite your best efforts, Ansell Drainage offers expert drain repair and cleaning services. Our professionals can quickly diagnose and fix any drainage issues, ensuring your home’s plumbing runs smoothly.

FAQs About Blocked Drains

What are the common causes of blocked drains?
Blocked drains can be caused by hair, food waste, grease, dirt, heavy rain, broken pipes, and foreign objects.

What should I do if my drains are blocked?
Start with a plunger, plumber’s snake, or a natural cleaning solution. If the blockage persists, seek professional help.

Am I responsible for fixing blocked drains?
If the blockage is inside your home, it’s your responsibility. For public sewers, contact your local water authority.

How can I prevent drain blockages?
Use drain covers, dispose of waste properly, and perform regular maintenance.

How can Ansell Drainage help?
Ansell Drainage provides professional drain cleaning, repair, and CCTV surveys to keep your drains clear.

By following these tips and knowing when to call for help, you can keep your drains running smoothly and avoid costly repairs.