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Top Tips for Unblocking a Stubborn S-Bend Drain in Your Bathroom

11/02/2025 | Hawkrown

The bathroom is an essential part of every household, and the floor drain is a crucial device connecting the bathroom to the sewer. Here’s how to clear a clogged S-trap floor drain in the bathroom.

How to Clear a Clogged S-Trap Floor Drain in the Bathroom

1. Use a Drain Cleaner to Unclog the Drain

Drain cleaners are a very common and effective method, available in two types: biological and chemical. Biological drain cleaners are eco-friendly and work by breaking down organic matter to clear the pipes. Chemical drain cleaners, on the other hand, generate gas to push the blockage out of the pipes. To use, pour the cleaner evenly into the blocked area, wait for a certain period, and then flush with plenty of water. If the results are not satisfactory, you can repeat the process, but be sure to protect yourself from splashes or inhalation to avoid harm.

2. Use a Spring Hose to Unclog the Drain

A spring hose is a flexible tool that has a certain length and elasticity, operating through mechanical force to clear the drain. Slowly insert the spring hose into the blocked drain while rotating it back and forth to crush or pull out the blockage. However, be careful during this process to avoid damaging the pipes.

3. Use Pressure to Unclog the Drain

This method requires specialized unclogging equipment. By applying pressure to the blocked area, the blockage is forced out. Cover the drain opening with the rubber part of the unclogging tool, and pump it to create pressure. Under pressure, the blockage should be expelled. Alternatively, you can use a washing machine drain hose to send high-pressure water into the bathroom floor drain for a similar effect.

4. Disassemble and Clean the Drain

If the above methods are not effective, you may need to disassemble the S-trap to clean the blockage. First, remove the odor-proof cover of the drain, carefully unscrew the bend using suitable tools, and then directly remove the blockage or rinse it with water. After cleaning, reassemble the drain and test with water to ensure it is unclogged.

In conclusion:I’ve introduced how to clear a clogged S-trap floor drain in the bathroom. Have you understood it? Clogging in bathroom floor drains is a common issue, but there are multiple solutions, such as using drain cleaners, spring hoses, pressure equipment, or even disassembling for a clean-out. Each method has its pros and cons, so it’s essential to choose the one that suits your situation best. Additionally, the best way to prevent clogs is through regular maintenance, such as avoiding hair, tissue, and other debris from entering the drain and cleaning it periodically, which can effectively reduce the occurrence of clogs.

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