Shannon,
In my experience as a conservator working for many
years in preventive conservation, most shade vendors offer UV film shades.
Their offerings depend upon which manufacturers they work with, as they do not
make the actual materials themselves. Also relevant is whether you want
visible light filtration also, which is highly recommended. However, not
all shade materials are equal, and it is important to ask for the manufacturer's
spec sheets which indicate the percentage of UV excluded (or alternatively
admitted, which is actually more helpful) as well as for the visible light if
that option is desired. As a conservator, I always advocate for 99-100% UV
exclusion effectiveness and 90% visible light exclusion. Using a bronze
tinted shade rather than a grey one results in the appearance of much more light
in the space at the same filtration rate.
I created a table for a light control project, but
MuseumL did not reproduce it correctly, so please email me for a PDF
copy. I measured actual performance of light filtering materials compared
to their claimed specifications. Many of the films can be obtained as
shades, but some only can be applied to glass, which is not necessarily the
ideal solution, although that can vary from situation to situation. I have
worked a lot with the Madico mylar roller shades and have found them to be
excellent. Remember, the vendor does not have to be local as long as you
can measure accurately and install the shades yourself. If you have the
choice, you will get better coverage if you can mount the shades on the window
moldings/trim extending an inch or two beyond the width of the opening on each
side rather than inside the opening, as about 1/2" clearance is needed on each
side to allow proper operation and some light will spill around the sides.
Please let me know if you have any questions.
Marc
American Conservation Consortium, LLC
4
Rockville Road
Broad Brook, CT
06016
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860-386-6058
*Collections Preservation Consultation
*Conservation Assessments &
Surveys
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Management Solutions
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Grant Preparation
Marc A. Williams, President
MS in Art
Conservation, Winterthur Museum Program
Former Chief
Wooden Objects Conservator, Smithsonian Institution
Sent: Wednesday, April 22, 2020 10:34 AM
Subject: [MUSEUM-L] UV Filtering Roller Shades
Hello,
We
have an old set of UV filtering roller shades that need replacing. These
are simple roller shades mounted inside the windows of an historic
building. The company we originally ordered them from is no longer in
business and I'm having trouble finding an alternative. We would like to
avoid film directly on our windows, but are interested in any viable
alternatives. Does anyone know of a company selling simple roller
shades? Thanks for your help!
Shannon
Shannon
Hsu | Curator of Collections | Shawnee Town 1929
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