I'm afraid it's not possible to create a room that disables chat in HipChat at this moment. However, I can see that there's a similar feature request raised before at:
I would suggest you Vote and Watch the feature request so that you'll receive an update when it is accepted in the future.
Earlier this year we made the difficult decision to discontinue our team messaging tools, Stride and Hipchat. The end of life date for Stride and Hipchat Cloud is quickly approaching - February 15, 2...
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