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If plunging fails, the clog is likely in the P-trap. Position your bucket directly beneath the trap. The P-trap is held in place by two large slip nuts, one connecting it to the sink's vertical tailpiece and the other connecting it to the horizontal drain arm going into the wall. Loosen these nuts by turning them counter-clockwise. You should be able to do this by hand; if they are too tight, use a pair of channel-type pliers. Once the nuts are loose, carefully wiggle the P-trap downwards and pull it free. Empty its contents (water and gunk) into the bucket. Clean the inside of the trap thoroughly with a brush and hot water in another sink or outside with a hose.

You're viewing a step from: How to Unclog a Double Kitchen Sink

Beginner

30 minutes

2/4 Inventory

This guide provides a comprehensive, step-by-step process for unclogging a double-basin kitchen sink. It covers the simplest methods like using a plunger and progresses to more involved techniques such as cleaning the P-trap and using a drain snake. The instructions are tailored for a common scenario involving a garbage disposal.

Based on content fromThe Plumbers Plunger· 201K subscribers

Frequently Asked Questions

Do I need to buy all the specialized tools, especially the drum auger, to unclog my double kitchen sink?

Not necessarily for every clog. Start with simpler tools like the HDX Sink and Drain Plunger. If that doesn't work, cleaning the P-trap requires basic pliers and a bucket. The Plumber's Choice 25 ft. Drum Auger is only needed for deeper, more stubborn clogs further down the drain line.

What are the most critical safety precautions I should take, especially since my double sink has a garbage disposal?

The absolute most critical step is to always disconnect power to the garbage disposal at the circuit breaker before performing any work near or inside the drain, even if you're working on the non-disposal side. Additionally, wear Heavy Duty Latex Gloves to protect your hands from grime and potential drain cleaner residue if any was previously used.

How long should a beginner expect this project to take, and is it genuinely a 'beginner' difficulty project?

For a simple clog cleared with a plunger, it might take 15-30 minutes. If you need to clean the P-trap, allocate 1-2 hours for setup, cleaning, and reassembly. Snaking a deeper clog can extend the project to 2-3 hours for a beginner. It's beginner-friendly in terms of steps, but patience and attention to detail are key.

When I try to plunge one side of my double sink, water just backs up into the other basin. How can I fix this?

This is a very common issue with double sinks due to shared drainage. To create effective suction with the plunger, you must completely seal off the drain opening of the non-clogged sink. Use a Universal Sink Stopper or have a helper firmly press a wet rag over the opening while you plunge the affected side.