Buck’s Tip of the Week: Why That Small Sink Leak Matters (Even in a New Home)
It’s easy to assume a brand-new house means everything was installed perfectly. Unfortunately, that’s not always the case.
One of the most common minor issues we see—especially in newer homes—is a leaking sink drain assembly.
It usually starts small. Just a little moisture. Maybe only when the sink is running. But left alone, it can cause real damage.
Why Sink Drains Leak
The drain assembly under your sink relies on:
- Proper plumber’s putty application
- Even compression
- Correct tightening
- A good seal between metal and porcelain
If putty is applied unevenly or fittings aren’t tightened correctly, water can seep through slowly.
You may not notice it until:
- The cabinet floor feels soft
- You see staining
- There’s a musty smell
Why New Homes Aren’t Immune
In fast-paced construction:
- Plumbing trim is often installed quickly
- Final checks may not catch slow seepage
- Minor sealing errors go unnoticed
The leak may not show up until weeks or months later.
What to Look For
Check under sinks periodically for:
- Dampness or water spots
- Warped or swollen cabinet bottoms
- Rust around drain fittings
- Drips when water is running
If you catch it early, replacing or resealing the drain assembly is typically straightforward.
If you wait too long, cabinet repair may become part of the project.
Buck’s Advice
Small leaks don’t stay small. Whether it’s a new house or an older one, taking care of minor plumbing issues early protects your home—and your budget.
If something looks damp, warped, or “not quite right,” it’s worth checking before it becomes bigger than it needs to be.


