This article from the Simpson Strong-Tie Structural Engineering Blog is excellent for explaining the how to prevent ceiling-floor partition drywall issues in your home.
The importance of “Fire Separations” and “Fire Stopping” cannot be overstated in building construction…and it all starts at the design stage.
This is one example of an existing building undergoing renovations, where the fire separations were not yet fully in place, one of the occupancies on the main level had a fire, and that fire spread throughout the balance of the building (as well as to neighbouring buildings).
The end result was catastrophic and the building had to be demolished, tenants (none of which to our knowledge were injured in the event) were displaced and all belongings and property were destroyed.
Read this article prior to using spray foam insulation on your next project. There are many factors that need to be understood and considered to ensure that it is right for you and your project!
Learn more here: Spray Foam Insulation, not magic bullet