When needing to store books for an extended period of time, the recommendation by the University of Hawaii Hamilton Library Preservation Department is to place the books in a commercial storage facility with environmental controls. 


Using a vented storage container will increase heat and humidity, both which in the extreme cause permanent damage to books. Temperatures over 72F will increase the chemical decay of paper. Humidity above 65% for an extended period will cause mold growth. The combination of both high temperature and high humidity will increase the rate of mold growth and creates an environment for insect infestation.