How to Prevent and Clear a Sink Clogged with Fats and Oil

How to Prevent and Clear a Sink Clogged with Fats and Oil

sink clogged

If you love cooking, you probably use a lot of fats and oils in your dishes. But do you know what happens when you pour them down the sink? You might think that they will just wash away with water, but that’s not the case. Fats and oils can cause serious problems for your pipes and drains, leading to clogs, odours, and even flooding. In this blog post, we will explain why fats and oils are bad for your sink, how to dispose of them properly, and how to clear a blockage if you already have one.


Why are fats and oils bad for your sink?

Fats and oils are liquid when they are hot, but they solidify when they cool down. This means that when you rinse them down the sink, they can stick to the walls of your pipes and form a thick layer of grease. This layer can trap other debris, such as food scraps, hair, or soap scum, and create a clog that prevents water from flowing freely.

According to ABC Everyday, fats and oils can also contribute to the formation of “fatbergs”, which are massive congealed masses of fat, wet wipes, and other waste that block sewer systems. These fatbergs can cause environmental damage, health hazards, and costly repairs. In 2017, a 250-metre long fatberg was found in a London sewer.

Fats and oils can also cause unpleasant smells in your sink and drain. As they decompose, they release gases that can make your kitchen stink. These gases can also corrode your pipes and fittings over time, making them more prone to leaks or bursts.


How to dispose of fats and oils properly?

The best way to avoid clogging your sink with fats and oils is to dispose of them properly. Here are some tips on how to do that:

– Never pour fats and oils down the sink or the toilet. This includes cooking oil, bacon grease, butter, margarine, salad dressing, mayonnaise, etc.
– Let the fats and oils cool down completely before disposing of them. You can use your fridge or freezer to speed up the process.
– Scrape or wipe off any excess fats and oils from your pots, pans, dishes, and utensils with a paper towel or a spatula before washing them.
– Collect the cooled fats and oils in a sealable container, such as an old jar or a milk carton. You can reuse the same container until it is full.
– Throw the container in the rubbish bin or take it to a recycling centre. Some councils offer options for recycling fats and oils, which can be converted into biodiesel or other products. You can check Planet Ark’s Recycling Near You website to find recycling options in your area.
– Alternatively, you can use some fats and oils for other purposes, such as making soap, candles, bird feeders, or compost.


How to clear a blockage caused by fats and oil?

If you already have a blockage in your sink caused by fats and oil, don’t panic. There are some ways to clear it yourself without calling a plumber. Here are some methods you can try:

– Plunge: Use a plunger to create suction and pressure in your drain. Cover the drain opening with the plunger cup and pump it up and down vigorously. This can help loosen or dislodge the clog.
– Boil: Boil some water in a kettle or a pot and pour it slowly down the drain. The hot water can help melt or dissolve some of the grease. Be careful not to burn yourself or damage your pipes with boiling water.
– Vinegar and baking soda: Pour half a cup of baking soda down the drain, followed by half a cup of white vinegar. The chemical reaction between them can produce bubbles and fizz that can break up some of the clog. Wait for 15 minutes, then flush with hot water.
– Caustic soda: Caustic soda (also known as sodium hydroxide) is a strong chemical that can dissolve grease and organic matter. However, it is also very corrosive and dangerous to handle. Wear gloves, goggles, and protective clothing when using it. Follow the instructions on the package carefully. Mix some caustic soda with water in a bucket (it will heat up) and pour it down the drain. Wait for 20 minutes, then flush with boiling water.
– Drain cleaner: Drain cleaner is a commercial product that contains chemicals that can clear clogs in drains. However, it is also very toxic and harmful to the environment. Use it only as a last resort and follow the instructions on the label carefully. Avoid contact with your skin, eyes, and mouth. Do not mix different drain cleaners or use them with other chemicals.


When to call a plumber?

If none of the above methods work, or if you are not comfortable or confident using them, you should call a licensed plumber to clear your sink clog. A plumber has the tools and expertise to deal with any type of blockage, including fats and oils. A plumber can also inspect your pipes and drains for any damage or leaks that may need repair.

Some of the tools that a plumber can use to clear Sink Clogged are:

– Drain snake: A drain snake is a flexible metal cable with a hook or a blade at the end that can reach into your pipes and break up or pull out the clog.
– Drain camera: A drain camera is a small device that can be inserted into your pipes and transmit a live video feed of the inside of your drain. This can help the plumber locate and identify the clog and choose the best way to clear it.
– High-pressure water jetter: A high-pressure water jetter is a machine that can blast water at high speed and pressure into your pipes and drains. This can flush out any clog, grease, or debris that is blocking your drain.

One of the plumbers that we recommend for clearing sink clogged caused by fats and oils is They are a licensed and experienced plumbing company that offers fast and reliable service in Sydney. They use a high-pressure water jetter and a CCTV drain camera to clear any type of blockage in your drain. They also offer free quotes and 24/7 emergency service.


Fats and oils are one of the most common causes of sink clogged and drains. They can solidify in your pipes and create a barrier that prevents water from flowing freely. They can also cause foul smells, corrosion, and fatbergs in your sewer system.

To prevent these problems, you should never pour fats and oils down the sink or the toilet. You should dispose of them properly in the rubbish bin or at a recycling centre. You should also clean your pots, pans, dishes, and utensils from any excess fats and oils before washing them.

If you already have a sink clogged caused by fats and oils, you can try some DIY methods to clear it, such as plunging, boiling, vinegar and baking soda, caustic soda, or drain cleaner. However, if these methods don’t work or if you are not sure how to use them safely, you should call a licensed plumber to clear your clog professionally.

We hope this blog post has been helpful and informative for you. If you have any questions or comments, please feel free to leave them below. And if you need a plumber to clear your sink clogged caused by fats and oils, don’t hesitate to contact for fast and reliable service.