One thing about concealed heads, pointed out to me be a very astute professional, is that practically these sprinklers become impaired in relatively short order. Painters usually don't care about the finer details of sprinklers. They paint over the concealed heads. The air gap is plugged. Activation is delayed. With several layers I will guess delayed significantly. If I was a owner depending on sprinklers for safety in my assembly occupancy or public spaces such as Marriott, and I was now armed with this information, I would think again about the aesthetics of concealed sprinklers. Looks good on paper, but they don't give what you pay for.
"Building a mechanical device for its appearance is kinda like putting lace on a bowling ball" Scot Deal Excelsior Risk and Fire gms: + 420 606 872 129 (GMT +2)
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