Why DIY Drain Cleaning Can Be Dangerous
The risks of DIY drain cleaning methods and why some jobs are better left to a professional drainage engineer. London and Essex drainage engineers, 24/7.
Clearing a slow sink with a plunger is usually harmless, but some DIY drain cleaning methods carry real risks to your health, your plumbing and your property.
Chemical drain cleaners
Strong chemical drain cleaners work by generating heat and reacting with the blockage, which can cause splashing, fumes and, in older or damaged pipes, further harm to the pipework itself. Mixing different chemical products, even accidentally, can also produce dangerous reactions.
If a chemical cleaner does not clear the blockage, it can be hazardous for an engineer to then work on that drain, since residual chemicals may still be present in the standing water.
Manual rodding and tools bought online
Drain rods and hand held augers are widely available, but used incorrectly they can scratch or crack pipework, particularly older clay or plastic drains. A rod pushed too forcefully can also drive a blockage further down the system rather than clearing it, turning a simple job into a bigger one.
Working near manholes and drain covers
- Manhole covers are heavy and can cause injury if dropped or lifted incorrectly
- Drains can contain harmful gases, which is a genuine health risk in confined spaces
- Standing water in a blocked drain may be contaminated with sewage
- Working near a live drain run without the right equipment increases the risk of a mess spreading into the property
When a DIY attempt hides the real problem
A DIY fix that temporarily clears water can mask a more serious issue, such as a collapsed pipe, root ingress or a badly scaled drain. Without a CCTV drain survey, it is easy to assume the problem is solved when it is likely to return, often at a less convenient time.
When to call a professional
If a blockage does not clear with a plunger, keeps returning, or you are dealing with a shared or external drain, it is worth calling a professional rather than escalating the DIY approach. We provide drain unblocking, jetting and CCTV surveys across London and Essex, along with a 24 hour emergency call out service.