There's a debate in house about whether the space above a drop ceiling and the drywall attached to wood joist above in an all wood building requires protection (please see link below). What say the forum?
https://www.dropbox.com/s/6ltbo57nmi4wh7p/Concealed%20Space.pdf?dl=0 Brian Harris, CET BVS Systems Inc. Design Manager bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935
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