Preserving History While Protecting What Matters

Guardian Bastille, we understand that museums and historic properties must strike a delicate balance — preserving their architectural integrity while protecting priceless collections and occupants from the damaging effects of heat, glare, and UV exposure.

Looks Natrual

Modern non-reflective and spectrally selective window films make that possible.

Unlike older, mirrored products, today’s advanced films deliver exceptional solar heat rejection and UV protection with minimal visible change to the glass. This allows curators, preservation boards, and facility managers to maintain the authentic appearance of their buildings while gaining the benefits of energy efficiency, fade protection, and occupant comfort.

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Solargard Hilite 70 window film installed on Brown University’s Rockefeller Library to replace outdated bronze reflective film and preserve natural light.

3M Ultra Prestige 70 window film at John Carter Brown Library protects rare collections from UV damage and improves glass security.

Years of experience

For more than five decades, Guardian Bastille has worked

on some of the most recognizable museums and historic landmarks across New England and beyond — including the RISD Museum (Fleet Library), Brown University, Harvard, the Newport Preservation Society, The Whitney Museum of American Art, DIA, and countless historic homes, libraries, and municipal buildings.

Our library needs this

Trusted by curators. Proven by history. Installed by experts.

Our team specializes in specifying and installing 3M Prestige Series

and other premium non-reflective films that meet the strict visual standards required for historic preservation projects while enhancing long-term protection and sustainability.

We need this for our gallery

3M Prestige 70 window film installed by Guardian Bastille at DIA Art Foundation in New York to protect artwork from UV and heat without altering natural light.