DanHenry Posted August 5, 2021 Report Share Posted August 5, 2021 Hi all, OK so there is a protected stairwell in a modern school that has a small server room under the stairs. There is an air grill fitted which appears to be fire rated intumescent however, no dampers to prevent cold smoke transfer. Is this acceptable? Thanks Quote Link to comment Share on other sites More sharing options...
AnthonyB Posted August 8, 2021 Report Share Posted August 8, 2021 Not normally, as it opens onto an escape route it would be expected to have cold smoke protection. Quote Link to comment Share on other sites More sharing options...
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