When developing a new exhibit space, or updating an existing exhibit space, it can be tough to find the right selection of exhibit cases and mounts. Archives staff may be looking to enhance an exhibit space with new cases that both better suit the collection and that are chemically and physically stable long-term. Sometimes it is not possible to order new cases, as it can often be less expensive to update existing cases rather than replace. Whether buying new or making changes, what are you options when displaying original archival material?
- Where can you buy archival grade exhibit cases?
Zone Display Cases is a Canadian company that designs and manufactures custom-made conservation grade display cases. They are made of powder-coated steel and glass and are closely inspected prior to shipping. They offer a promise that all display cases shipped are without defect. Some of their most recent projects have included creating cases for Parliament of Canada, Harvard University, The Prince of Wales Northern Heritage Centre, and Yale University.
Goppion: The Art of Case Design began as a glass making company in Milan. Over the years they began creating custom display cases to meet clients’ special needs. Their work can be seen in museums across Europe.
Glausbau Hahn is a German company that produces their glass and coated metal cases within country using resource efficient methods and materials. Their cases can be viewed throughout Europe, and, closer to home, can be seen at the Royal Ontario Museum.
- How can non-archival grade exhibit cases be updated?
Often unmodified exhibit cases are adopted for use because they are what is available and on-hand. These exhibit cases are sometimes painted or lacquered wood, particle board, or even mixed materials, including cork. These materials are generally not archival grade unless steps are taken to stabilize them. They will off-gas and negatively affect the items housed inside by causing embrittlement and yellowing to the paper. Completely replacing the case may not be within the budget, so what can be done?
- If the case is lacquered wood it is recommended to place acid-free barriers like mat board or panes of glass along the shelves or platform. This is to ensure the collection items are not in direct contact with the wood.
- If the case is coated metal and areas of the coating has worn off, it is recommended to apply a fresh coating of enamel paint to reduce the possibility of corrosion in areas with exposed metal. Allow paint to cure for two weeks before use.
- If the case is made of particleboard, plywood or MDF it is recommended to coat it with enamel paint, and set aside to cure for two weeks before use. It is recommended to coat these types of wood products because they off gas due to adhesives within the material.
- Cork is often used as a base material on shelves and platforms, frequently found in cases produced for schools and libraries. Cork is not archival grade and is not chemically stable. It is recommended to cover the cork board with buffered mat board, with an additional sheet of unbuffered acid-free mat board overtop. The underside of the buffered mat board should be routinely checked for discolouration. Once it begins to discolour, replace with another sheet of buffered mat board. It is recommended to put unbuffered mat board overtop of the buffered one because some archival materials react poorly to change in pH. Unbuffered mat board is inert and so is preferable if placing archival materials directly on it.
Microclimate equipment can also be installed in new or repurposed exhibit cases. Canadian company, Keepsafe Microclimate Systems, offers a variety of temperature, humidity, and oxygen moderating equipment that can be installed in cases to better protect collection material from the environment and pests.