Skip to main content
How to Unclog a Double Kitchen Sink

How to Unclog a Double Kitchen Sink

Advanced
1.9 hours
5 Steps
17 Items

About This Project

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.

T

Based on content from

The Plumbers Plunger
201.0K subscribers· +22 others
View Channel

Best for advanced DIYers and professionals with basic plumbing knowledge. Requires MCR Safety BearKat Safety Glasses MCSCRWBK110.

Tools & Materials

Unger 6 Gal. Heavy-Duty Plastic Bucket DB02

Unger 6 Gal. Heavy-Duty Plastic Bucket DB02

FRESHFOLDS Combed Cotton Absorbent Textured 6 Piece Towel Set EC100755

FRESHFOLDS Combed Cotton Absorbent Textured 6 Piece Towel Set EC100755

Goodyear Rubber

Goodyear Rubber

MCR Safety BearKat Safety Glasses MCSCRWBK110

MCR Safety BearKat Safety Glasses MCSCRWBK110

HDX Sink and Drain Plunger 178039

HDX Sink and Drain Plunger 178039

Everbilt Universal Sink Stopper for Garbage Disposals in Stainless Steel 22-0001G-00

Everbilt Universal Sink Stopper for Garbage Disposals in Stainless Steel 22-0001G-00

Steps

Common Problems

The water inside the P-trap will likely have a foul odor. Be prepared.

Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.

Water overflows or spills onto the counter during plunging.

Solution: Have paper towels ready to plug the sink drain temporarily and for cleanup.

Stripped or cracked slip nuts prevent easy drain disassembly.

Solution: If the slip nuts are too tight to loosen by hand, use channel-lock pliers, but be careful not to apply too much force and crack the plastic.

If you've poured any chemicals down the pipe, don't open the trap unless your eyes and hands are protected.

Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.

Be prepared for water to spill as soon as the seals are broken. Loosen the nuts slowly.

Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.

The P-trap is designed to hold water to block sewer gases, so expect water to spill out when it is removed.

Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.

Water spills everywhere when removing the P-trap.

Solution: Have a bucket and rags ready before loosening the P-trap, as there will always be water inside it.

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.

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.

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.

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.

It is generally not recommended to use chemical drain cleaners, especially in kitchen sinks with garbage disposals. They can be ineffective against common kitchen grease clogs, damage plastic pipes or disposal components, and pose a significant safety hazard if they don't work and you later resort to manual cleaning.

If simpler methods have failed, the clog is likely further down the main drain line. Your next step is to use The Plumber's Choice 25 ft. Drum Auger (drain snake) to reach and break up the obstruction. Ensure you clear out any standing water before snaking for better access and to minimize mess.

How to Unclog a Double Kitchen Sink - Stesso DIY Guide