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While open plenum spaces have gained popularity, they鈥檙e not a panacea, nor can they be used everywhere. For instance, they can鈥檛 be used in many healthcare settings, Barnes says, noting that open ceilings 鈥渨ould have lots of places for dust and microbes to hide.鈥�

Acoustics is another concern. In a traditional closed ceiling, the acoustical ceiling panel typically does a decent job of absorbing sound. With an open plenum, that acoustical line of defense is lost.

For instance, designing an open plenum in a reception area that already has a hard-surface floor could make it difficult for employees at the front desk to hear people phoning the company. When deciding on a ceiling design and materials, it鈥檚 critical to first understand how the space will be used.

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