Sink Drain Pipe Leaking at Connection (And How to Fix It)
One of the most common and noticeable leaks in your home is a kitchen sink drain pipe leaking at the connection point. There are several potential culprits that can lead to kitchen sink drain leaks:Signs of a Kitchen Sink Leak
Before diving into drain leak causes, it’s important to know the signs of a leak. Watch for pooling water under the sink, dripping from the sink edge, musty odors from damp cabinets, and rust stains on pipes to identify a potential “kitchen sink leak” early.1. Improper Pipe Sizing or Lengths
Many plumbing repairs are thrown together with mismatching pipes – the wrong sizes, improper lengths, or a hodgepodge of materials. This improper piping causes excessive pressure buildup at connections, leading to joint failure and leaks under the sink. Re-piping with proper fitting, uniformly sized pipes is the best fix for this issue.
2. Clogged Drains and Traps
When drains and traps become clogged with grease, soap scum, hair, and other gunk, it can lead to a backup of water. Clearing a “clogged kitchen sink drain” can prevent leaks caused by backed up water pressure.
Avoid harsh liquid drain cleaners, as they can erode pipes further. Preventing clogs helps avoid leaks.
3. Loose Compression Nut
Over time, the “sink drain pipe leaking at connection” to the garbage disposal can loosen from vibration and pressure changes. Tightening the compression nut can fix this leak at the drain joint.
4. Worn Out or Cracked Compression Nut
If the compression nut is already tightened and the leak persists, inspect the nut for cracks or excessive wear. A damaged compression nut cannot form a tight seal. The cracked or warped nut will need replacing to stop the leak at the drain joint.
