Guitar Fret Buzz: Every Cause, Every Fix — The Definitive Diagnosis Guide

Fret buzz is the grinding, rattling sound of a string contacting a fret it shouldn't contact. It's one of the most common guitar complaints and has multiple possible causes.

Diagnostic Step 1: Where Does the Buzz Occur?

- Open strings only: Nut issue - Low frets (1-5) only: Nut too low or insufficient neck relief - Middle frets (5-12) only: Insufficient relief (neck too flat or back-bowed) - High frets (12+) only: Action too low at saddle, or high frets - Everywhere: Multiple issues, or a dramatically low setup

Cause 1: Capo Pressure

Symptoms: Buzz only when capo is used. Buzzing in notes near the capo. Fix: Reduce capo pressure to the minimum needed for clean notes. Use the PGL Adjustable Tension Capo to dial in perfect pressure for your guitar.

Cause 2: Nut Too Low

Symptoms: Buzz on open strings or very low frets. Fretted notes are fine. Fix: Fill nut slot with bone dust and CA glue, then re-cut. Or replace the nut entirely. See a tech for this one.

Cause 3: Insufficient Neck Relief

Symptoms: Buzz in middle fret range, clean at high and low frets. Fix: Truss rod adjustment to add slight forward relief. Small turn (1/8) counterclockwise on most guitars. Allow 24 hours to settle.

Cause 4: Action Too Low at Saddle

Symptoms: Buzz throughout the fretboard, especially at high frets. Fix: Raise the saddle. Sand a shim, or replace with a taller saddle (acoustic) or raise individual saddle screws (electric).

Cause 5: Uneven or Worn Frets

Symptoms: Buzz only on specific notes, not adjacent frets. The 'high fret' theory — one fret that sticks up beyond its neighbors. Fix: Fret leveling, crowning, and polishing by a professional luthier.

Cause 6: Loose Components

Symptoms: Buzz that changes when you press on different parts of the guitar — headstock, bridge, nut. Fix: Identify and secure the loose component (tuner bushing, bridge pin, nut).

Free Diagnosis

Describe your buzz to our Pro Concierge — where on the neck, what strings, when it happens — and we'll point you toward the right fix.