Damage to a book is cumulative. The repeated incorrect
handling and storage of a book can quickly transform a new
book into a worn or even an unusable one. Proper handling
and storage in a stable, cool, clean, non-humid environment,
can prolong its life.
The environment around the book, is
a major concern because unacceptable levels of temperature
and humidity will accelerate deterioration. For example, the
high humidity in an attic or basement can promote mold
growth, cockle pages, and attract insects. Extremely low
humidity, as found above hot radiators, can dry out leather
bindings.
Direct sun-light, with a large ultraviolet (UV)
component, will fade leather and cloth. Blue leather fades
to dull green and red leather to brown, especially along the
spine of the book.
Dust, dirt and grime from handling can adversely effect
books as well. Many people shelve their books in closed
glass cases away from brightly lit windows or damp exterior
walls to minimize the amount of dust and grime that will
accumulate.
How we handle and use a book contributes to its
longevity. If a book will not lay flat, do not use force to
open further. The covers should always be supported when the
book is open.
Many books are damaged by the habit of pulling the books
off the shelf with the head cap or the top of the spine. It
is a much better practice to push the two adjoining books
inward and remove the book by grasping the spine.
Place similar sized books, next to each other on the
shelf vertically, packing them neither too loosely or
tightly. This will help to prevent warping of a tall book
next to a short book.
The use of paper clips and marking pens to make notations
should be discouraged since clips will rust or crimp the
pages and pens often bleed through the pages, obscuring
text. The folding down of page corners is also damaging as
it will often cause the page corner to break off over time.
The practice of using rubber bands or string to tie-up a
book should be avoided because both will cut into brittle
pages and damage fragile covers. A flat, soft ribbon (such
as cotton twill tape), can be used to tie up the books as an
immediate and temporary solution. An excellent way to
protect fragile books is with a box that is custom made to
the dimensions of the book. Books with dry flaking leather
covers can be wrapped in paper or polyester jackets to keep
the fragments and dirt from transferring to hands, adjoining
books and the rest of the pages.
In the past, leather books were treated with a leather
dressing; however the application of an oil or leather
dressing can have an adverse effect and is, therefore, not
recommended.