Extended exposure to high humidity can lead to guitar damage. ... The wood in a guitar can swell tremendously, causing glue joints to fail, finish to lift, and neck angles to go bad. Distortions in the wood can remain even after other damage has been repaired, leaving the guitar cosmetically disfigured.
What if humidity is too high?
It's true: too much humidity causes mold growth, and can create condensation in your walls. This leads to structural damage and wood rot. Too much humidity is also bad for you. It can lead to respiratory problems, allergy flare-ups, and sleep interruptions.
Is 60% humidity too much for guitar?
Most humidity problems occur due to too little humidity, not too much. Between 40% and 60% is a good target, and a little higher shouldn't be a problem. Winter is usually a time when low humidity is a problem due to indoor heating.
Is 60% humidity too high?
Most of us feel comfortable inside our home when the relative humidity remains between 30 and 60 percent. ... Conversely, when the level is above 60 percent, the air is too wet, which is also harmful to both the home and the homeowners.