Blocked Drains Causes, Quick Fixes, and When to Call a Plumber
Drains
3 minutes
26 Sept 2025
Written by Jake Deppeler — Plumber & Founder of Trust Trade
Introduction
A blocked drain can turn from a small inconvenience into a messy, costly problem if it isn’t fixed quickly. While some minor blockages can be cleared at home, others need professional help. Here’s a clear guide to understanding blocked drains.
How It Works
Drains are designed to carry water and waste away efficiently. Over time, materials build up inside the pipes and reduce water flow. The most common causes are:
Food scraps, oils, and grease in the kitchen sink
Hair and soap scum in bathroom drains
Tree roots breaking into outdoor pipes
Wipes, sanitary products, or foreign objects flushed down toilets
Key Benefits of Fixing Early
Avoid costly repairs – Early clearing prevents pipe damage.
Stop bad smells – Unpleasant odours disappear once the blockage is gone.
Better hygiene – Standing water can grow bacteria.
Peace of mind – No risk of toilets or sinks overflowing unexpectedly.
What to Watch Out For
DIY gone wrong – Harsh chemicals can damage pipes.
Recurring blockages – Often a sign of a bigger issue, like cracked pipes.
Slow drainage – Don’t wait until the water stops flowing completely.
What to Do Next
If your drain is slow or smells bad, try a plunger or boiling water for minor clogs. But if the problem keeps coming back, it’s time to call a plumber. Use Trust Trade to find a verified plumber near you who can fix the cause, not just the symptom.