Blocked drains: causes and lasting solutions

Why does a drain block?

In a kitchen, fat cools and traps food residue. In a bathroom, hair, soap and cosmetics gradually form a mass. A recurring blockage can also reveal an insufficient slope, the wrong pipe diameter or a defect further along the network.

Signs you should not ignore

Slower draining, gurgling noises, persistent smells or water backing up in another fixture show that the drain is clogging. Acting early limits the risk of overflow. If several fixtures are affected at the same time, the problem may lie in a shared pipe.

What can you do without damaging the system?

Remove the waste you can reach at the plughole, clean the trap if you know how to refit it properly and use hot water where the material allows. Avoid repeated use of chemical drain cleaners: they can be dangerous to handle, attack some seals and make the later repair harder.

Preventing blockages for good

Fit strainers, do not pour oil or fat down the sink and regularly remove hair from plugholes. A drain that blocks often deserves a diagnosis: treating only the visible blockage does not fix a reverse slope, a crushed pipe or a deep deposit.

Frequently asked questions

The right next step

Observe the symptoms, avoid risky handling and note what changes. For a recurring problem or a renovation project, an on-site diagnosis lets you choose a suitable solution rather than a temporary fix.