Hi Stacie - you will need to make sure that the bronze coloured plexi
actually blocks the UV as well as the visible light.  It is the UV part of
the spectrum (not visible) that causes the most damage to museum objects.
If you have a problem with you space heating up from direct sunlight, then
you will need to determine if the product is blocking the infrared radiation
(also not visible).

regards

2009/5/22 Stacie Petersen <[log in to unmask]>

> We are looking at options to cover some of our single-pane windows in the
> original part of our building to block UV when we reinstall the gallery.  I
> was considering using UV film, but someone I have been consulting with said
> the the newer and better recommendation from conservators is to use
> Bronze-colored plexiglas that blocks 75-90% of visible light.
>
> I was wondering if any of you were familiar with the Bronze-colored plexi
> and have used it.  Does it change the color of light much, is it effective,
> is it difficult to install.  Also what manufacturers have you worked with.
> These windows, which are up along the ceiling, provide much of the light for
> the gallery.  I would appreciate any comments.
>
> Thanks in advance for all of your help.
>
> Stacie
>
> Stacie Petersen
> Registrar
>
> <http://www.roswellmuseum.org/>
> Roswell Museum
> and Art Center
>
> 100 West 11th Street
> Roswell, NM 88201
> 575-624-6744, ext. 13
>
>
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-- 
Carrie Thomas
Paintings Conservator

=========================================================
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