Blocked drains are a common household issue that can lead to unpleasant odours, slow drainage, and even flooding if left untreated. Understanding the causes of blocked drains and how to prevent them is key to keeping your drainage system running smoothly. In this blog, we will explore the most frequent reasons for blockages and offer practical solutions for prevention.
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1. Grease and Fat Build-Up
One of the top causes of blocked drains is the accumulation of grease, fat, and oil. Many people pour cooking oil and fat down the sink, unaware that it solidifies in the pipes over time, creating blockages. Once the fat hardens, it traps other debris, forming a solid mass that restricts water flow.
Prevention:
To avoid fat and grease build-up, always allow oil to cool and dispose of it in the bin. You can also use grease traps to collect excess fat before it enters your drainage system. Regularly flushing your sink with hot water and a mix of vinegar and baking soda can help dissolve any residual grease.
2. Hair
Hair is another common culprit when it comes to blocked drains, particularly in bathroom sinks and showers. Strands of hair easily get washed down the plughole and accumulate in the pipes. Over time, hair tangles with soap scum and other debris, forming a blockage that slows drainage.
Prevention:
To prevent hair from clogging your drains, install a drain cover or hair catcher over your plugholes. These inexpensive devices catch hair before it has a chance to enter the pipes. Regular cleaning of these covers will also help keep your drains clear.
3. Food Waste
While kitchen sinks are often equipped with strainers, some food waste inevitably makes its way down the drain. Food particles can accumulate and, when combined with grease, create stubborn blockages. Starchy foods like rice and pasta are particularly problematic because they expand when exposed to water, further blocking the drain.
Prevention:
Avoid flushing food waste down the sink. Scrape plates into the bin before washing, and use a sink strainer to catch any food that may slip through. Regular cleaning of your strainer will prevent blockages from forming.
4. Wet Wipes and Sanitary Products
Despite being labelled as "flushable," wet wipes and sanitary products are major contributors to blocked drains. Unlike toilet paper, these products do not break down easily and can create large, stubborn blockages in the pipes.
Prevention:
Never flush wet wipes, nappies, or sanitary products down the toilet. Dispose of these items in a bin instead. Educating all household members on proper disposal can help prevent future blockages.
5. Soap Scum
Soap may seem harmless, but over time, soap residue can build up in your pipes and cause blockages. This is particularly common in bathrooms, where soap scum mixes with hair and other debris to create tough clogs.
Prevention:
Switch to soap-free or liquid cleansers, which are less likely to leave residue. Additionally, regular cleaning of your drains with hot water can help break down soap scum before it accumulates.
6. Foreign Objects
Sometimes, objects that don’t belong in the drain can accidentally end up there. Children's toys, cotton buds, and even jewellery are frequently found blocking drains. These items obstruct water flow and can cause severe blockages that require professional assistance to clear.
Prevention:
Be mindful of what is allowed to go down your drains. Installing drain covers in sinks, bathtubs, and toilets can prevent foreign objects from slipping through. If you have young children, ensure toys and small objects are kept away from the bathroom or kitchen.
7. Tree Roots
Tree roots are a more serious cause of blocked drains, particularly in older properties. Roots naturally seek out moisture, and if there are cracks or gaps in your underground pipes, tree roots can infiltrate the system. Once inside, roots continue to grow, blocking the flow of water and causing significant damage to the drainage system.
Prevention:
Regular drain inspections using CCTV cameras can help identify potential issues with tree roots before they become problematic. If tree root intrusion is detected early, professional services can remove the roots and repair any damage to your pipes.
8. Mineral Build-Up
In areas with hard water, mineral deposits can accumulate inside your pipes over time. These deposits, often referred to as limescale, reduce the diameter of the pipes and restrict water flow, leading to blockages.
Prevention:
Installing a water softener can reduce mineral build-up in your pipes. Additionally, regularly descaling your plumbing system with specialised cleaners can help prevent limescale from accumulating.
How to Prevent Blocked Drains: General Tips
Preventing blocked drains requires a combination of good habits and occasional maintenance. Here are a few general tips to keep your drains flowing smoothly:
Use drain covers: These can catch hair, food, and other debris before they enter the pipes.
Flush drains regularly: Pouring boiling water down the drain can help dissolve grease, soap, and other blockages before they build up.
Be mindful of what goes down the drain: Avoid flushing items like wet wipes, grease, and large food particles.
Schedule regular inspections: If you live in an area prone to tree root problems, professional drain inspections can catch issues early.
Conclusion
Blocked drains are a common but preventable problem. By understanding the causes—such as grease build-up, hair, food waste, and foreign objects—you can take proactive measures to avoid clogs. Regular maintenance and smart disposal habits are the keys to keeping your drains clear and functioning properly.
