Can Armstrong ceilings be used externally?
The two main considerations relating to the use of suspended ceilings for external locations are humidity and wind loading. Three of Armstrong ceiling products, Ceramaguard, Newtone, and Orcal plain (unperforated) tiles painted on both face and reverse surfaces, are suitable for use in conditions of up to 100% RH, which can occur externally, although none of these tiles should ever be subjected to direct precipitation. However, wind loading can potentially be equally as serious by exerting either a positive or a negative pressure on ceilings that could dislodge and damage both tiles and grid. Therefore, because wind forces can vary considerably depending upon both topographical and geographical locations, a thorough analysis should be undertaken by a structural/environmental engineer before an external installation is considered. Only Armstrong Prelude non-corrosive grid should be specified if an exposed grid system is used externally, using rigid hangers and tile hold-down clips and,
