Why do drains get blocked? Here are the most common causes

Posted on Apr 21, 2017


If you are facing any gurgling sound coming from your bathroom or toilet, see the kitchen sink takes longer than usual to drain or notice the home drainage system is covered in bad odour, there are high chances you are dealing with blocked drains. In such situations, it is mandatory you do some detailed research on the Internet and find the best company that provides services on clearing blocked drains in London. Below you will find the most common causes why drains get blocked.

Fat and grease

One of the most common causes why drains get blocked is due to fat and grease. Most people are of the opinion that if they pour liquids containing grease down the drain while leaving the faucet on for water to pour, nothing bad can happen, but they couldn’t be any more wrong. The truth is the grease will stick to the interior walls of the pipes and it will become bigger and bigger over time, thus completely block the pipe. The sooner you take care of your drainage system, the better it will be.


Hair is another very common problem of blocked drains. Sure, a single hair strand is not going to block your drain, but larger amounts can. This is the reason why it is so important to clear bathroom drains on a regular basis. Soap scrum and hair can actually create a built-up inside the pipe and if not taken care of in due time. Check the cover of the shower drain every once in a while to see whether or not there is a hair blockage inside the pipe and if there is, clear it away.

Heavy rain and storms

Sometimes blocked drains may not occur of your fault, but due to various other external factors and the most common one is nature itself. When there is heavy rain, there are high chances for flooding to occur and in such situations drains are usually subjected to very large amounts of water, which eventually may lead to various drainage problems, especially if they have not been cleared out in a while. Litter, leaves and debris block or even damage the pipes. Experts in the field strongly recommend to clean the drains every once in a few months to ensure you avoid such drainage problems from occurring.

All in all, these are some of the most common causes of blocked drains.