How to unclog a badly blocked kitchen sink drain

Clear a stubborn kitchen sink clog using a plunger, a drain snake and hot water instead of harsh chemicals. It suits renters and homeowners with a slow or fully blocked drain. You need a cup plunger, a bucket and a few old towels.

How to Unclog a SEVERELY Blocked Drain in Minutes - The SECRET Method That Destroys ANY Clog!, by Roger the Pipe Guy on YouTube. 18 min 52 s.

Video length
18 min 52 s
Time to do it
30 minutes
Difficulty
Medium
Steps
8

What you need

Steps

  1. Put on gloves and place a bucket under the sink trap. Lay towels around the base to catch spills.

  2. Lift out the strainer and pull any hair or food scraps out of the drain opening with your fingers or a hooked wire.

  3. Block the overflow hole with a wet cloth so the plunger gets suction. Fill the sink with about 5 cm of water.

  4. Seat the cup plunger over the drain and push down firmly, then pull up. Repeat 15 to 20 quick strokes, then lift the plunger away.

  5. If water still drains slowly, feed a drain snake into the pipe until you feel resistance. Crank the handle to hook the clog, then pull it back out slowly.

  6. Still blocked? Place the bucket under the P-trap, unscrew both slip nuts by hand, and remove the trap. Clean it out and check the pipe for grease or hair.

  7. Reassemble the trap and hand-tighten the nuts. Run hot water for two minutes to flush the line and check for leaks.

  8. If the clog returns, repeat the plunging and snaking. A clog deep in the main line needs a plumber with a power auger.

Tips and common mistakes

Never mix chemical drain cleaner with plunging or snaking, because the splash can burn your skin and eyes.

Skip boiling water on PVC pipes, since it can soften the joints. Use hot tap water instead.

Grease poured down the sink is the most common kitchen clog, so wipe pans into the bin before washing.

If several drains in the house back up at once, the blockage is in the main line and needs a professional.

Questions

Can I use a wire coat hanger instead of a snake?

Yes, for a shallow clog near the drain. Bend a small hook at one end and push it in gently so you do not scratch the pipe.

Why does my sink drain slowly again after a few days?

Grease or hair is probably still coating the pipe wall. Snake the line again and flush with hot water weekly for a month.

Is chemical drain cleaner a good idea?

It can damage older pipes and is risky if you later plunge or snake. Mechanical methods like a plunger and snake work better on severe clogs.

This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.

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