Stop Rattling Keys and Noisy Action in Low Humidity

Just as doors and drawers become loose in dry air, the keys of your piano may seem to rattle or exhibit clacking, noisy action when played

Prevent Costly Bridge and Soundboard Damage

The soundboard is the single largest piece of wood in your piano. It actually vibrates to amplify the sound produced by the strings. The bridges of your piano are joined to the soundboard and support the strings.

When the soundboard shrinks and flattens, the tension of strings over the bridge becomes inadequate. The pitch of the mid-range and treble section is now flat.

Moist Conditions

Dry Conditions

Over time, constant changes in humidity levels, with the corresponding shrinking and swelling of the soundboard, will damage the integrity of the soundboard. You will see this damage in the form of a crack in the soundboard.

Cracked Soundboard

Prevent Pinblock Damage

In dry periods, the wood shrinks away from the pin, loosening it and causing the string to sag. When this cycle is repeated time after time, the wood fibers surrounding the pin are destroyed and lose their resilience.

Moist Conditions

Dry Conditions

In this picture, the pinblock (without pins) was removed from a piano during restoration. With continuous swelling and shrinking, the wood could no longer provide the snug fit required to hold pins in place.

Pinblock Damage