The narrower range that humidity is controlled, the less damage to the piano. But even a short excursion to the 25%-20% level, or 80%-90% level, can do permanent damage. There are many guidelines available for wood preservation, such as these from the Smithsonian: http://www.si.edu/mci/english/learn_more/taking_care/biodetwood.html --Cy-- Cy Shuster, RPT Albuquerque, NM www.shusterpiano.com http://www.facebook.com/shusterpiano On Jun 20, 2010, at 12:38 PM, allan at sutton.net wrote: > Cy, wouldn't the damage result from very high humidity in the summer > followed by very low level ? Thank you for the great links. > > David, I will add this to my "testimonial collection" > > > Allan Sutton, m.mus. RPT > www.pianotechniquemontreal.com > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100620/71f4fddc/attachment.htm>
This PTG archive page provided courtesy of Moy Piano Service, LLC