Sun fade query...

I alway keep direct sunlight away from my books. But can a spine become faded
from indirect sunlight? I suddenly realized that my library room was quite
sunny today (it has lots of windows.) and I began to fret that my S.J.
Perelmans might be getting too much ambiant light.

Is this a concern...or should I worry about something else?

Thanks in advance,

Jonathan

"Jbrodie1750" <jbrodie1750.DeleteThis@aol.com> wrote in message
news:20030702233731.08825.00000054@mb-m20.aol.com...
 > I alway keep direct sunlight away from my books. But can a spine
become faded
 > from indirect sunlight? I suddenly realized that my library room was
quite
 > sunny today (it has lots of windows.) and I began to fret that my S.J.
 > Perelmans might be getting too much ambiant light.
 >
 > Is this a concern...or should I worry about something else?
 >
 > Thanks in advance,
 >
 > Jonathan

....


It appears that all kinds of light can cause fading in
curtains, carpets, books everything. At the bottom are
"the facts" from a solar film website.


The degree to which your books wil fade will depend on how
much care the binders took to use permanent inks and dyes in
their production. Unfortunately there are no guarentees of
consistency in this.

Anyone who collects say penguin books from the 60's and 70's
will know that while ostensibly they were same orange colour
when new, some of the spines will be bleached white by
sunlight while others will remain as deep coloured as
when new

It's not a concern in the sense that many examples
of the more vulnerable books may well exhibit
such fading on the spine already.

While if you want to preserve any perfect examples you
already own, you could try the film suggested below, or
store the books in thick paper bags or in a cupboard

atb


michael adams


start quote:

[This site *does* however promote window film ]

All materials fade from sunlight in time. Fading is inevitable
and the same applies whether it is caused by exposure to
intensive sunlight for a short time or a long exposure to the
weaker light of cloudy overcast days. Here in the Pacific Northwest,
the sun's damage can be especially insidious because in spite of
our cloudy winter months, damage from fading continues.

To understand the causes of fading one needs to know a little
about the makeup of sunlight. Sunlight is basically made up of
three elements:

Visible Light - the part which enables us to see

Infra Red - the part which we feel as heat

Ultraviolet Light - which we neither feel nor see but it is
the main factor in causing fabrics and furnishings to fade.

Visible light and infra red heat are other factors that contribute
to fading, which is why effective film installations must harness all
three sunlight elements.

Severe fading can be minimized with the use of solar control
window film, which blocks 99.9% of all UV rays drastically reducing
the damage and enabling most fabrics and furnishings to look fresh
and vibrant for years to come

:end quote

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