Why Does My Drain Keep Getting Blocked? Common Causes and Fixes

drainage pipe system

Blocked drains are one of the most frustrating plumbing problems. You clear it, and a week later, the water is pooling again. If your drains keep clogging, it’s a sign something deeper is going on.

In this guide, we’ll look at the main reasons drains get blocked, how to prevent it, and when you should call a professional plumber.

1. Everyday Causes of Blocked Drains

Even with the best habits, drains naturally collect debris over time. The most common causes include:

  • Grease and oil: Solidifies and coats pipes.
  • Hair: Especially in showers and bathrooms.
  • Soap scum: Creates sticky build-up.
  • Foreign objects: Wipes, cotton buds, sanitary products — even “flushable” items can block pipes.

Our blocked drains service handles all these issues, from small clogs to major blockages.

2. Bigger Plumbing Issues Behind Repeated Blockages

If your drains keep blocking despite careful use, the problem may be in your plumbing system itself:

  • Tree root intrusion: Roots grow into outdoor pipes, causing recurring clogs.
  • Damaged or collapsed pipes: Old or cracked pipes trap debris and cause ongoing blockages.
  • Poor installation: Incorrect pipe slope or joins can make water drain poorly.

Our team uses advanced tools to diagnose hidden issues, including leak detection technology.

3. Warning Signs You Shouldn’t Ignore

Recurring blocked drains often show up alongside:

  • Slow draining sinks, showers, and baths
  • Gurgling sounds in pipes
  • Bad odours coming from drains
  • Overflowing outdoor drains during rain

These are red flags that there’s more than just a surface-level clog.

4. DIY Quick Fixes (That Actually Work)

Before calling a plumber, you can try:

  • Boiling water flush: Breaks down grease build-up.
  • Plunger: Creates suction to clear small clogs.
  • Drain snake: Good for hair or debris near the surface.

⚠️ Avoid chemical drain cleaners — they can damage pipes and often make the problem worse.

5. When It’s Time to Call a Plumber

If your drain keeps blocking despite DIY efforts, it’s time to call in professionals. A licensed plumber can:

  • Use high-pressure jetting to clear tough clogs
  • Inspect pipes with a CCTV camera
  • Repair or replace damaged sections of pipe
  • Provide long-term solutions, not just quick fixes

At ASAP Trades, we provide fast, reliable drain clearing that gets to the root of the problem — not just the symptom.

👉 Book a blocked drain service today

6. How to Prevent Blocked Drains Long Term

  • Install drain strainers in sinks and showers
  • Never pour grease or food scraps down drains
  • Schedule routine plumbing maintenance
  • Get your pipes inspected if blockages keep returning

Final Word

If your drain is constantly blocking, don’t ignore it — repeated clogs are often a sign of bigger plumbing issues.
From everyday blockages to tree root intrusions and pipe repairs, ASAP Trades has the experience and tools to fix it right the first time.

👉 Contact us today for same-day service.

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