In some of our buildings we have the dark tinted Plexiglas. It does dramatically change the light in the room, which, I guess is the point. However, since our buildings generally have no electricity, very dark spaces make it hard to see, which can impact the visitor experience and sometimes their safety. I have been looking at some of the newer window films. In particular, 3M's Prestige line. They do not use any metals in the film, and there is a clear version and a tinted version. The film reduces or eliminates UV, and reflects (or is it refracts?) the heat or infra-red light, which are two of the components of fading. I was considering the clear because we need the light, so if we can reduce or eliminate the other aspects, that would be very helpful. However, I am not a conservator, so it will be great to hear from the experts. Also, while on the topic of Plexiglas, I was surprised to speak with our facilities director, whose previous job included making industrial clean rooms. He said they would not use Plexiglas because it off-gassed, particularly during its first six months. Knowing that it is widely used in museums for cases, framing, etc., I would love a conservator's comments on that. Sabrina Henneman Collections Registrar Genesee Country Museum ________________________________ From: Museum discussion list [mailto:[log in to unmask]] On Behalf Of Stacie Petersen Sent: Thursday, May 21, 2009 12:04 PM To: [log in to unmask] Subject: [MUSEUM-L] UV Film vs. Bronze-colored Plexiglas 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/RMAC_Logo_2.gif]<http://www.roswellmuseum.org/> Roswell Museum and Art Center 100 West 11th Street Roswell, NM 88201 575-624-6744, ext. 13 ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes). ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).