Decision Tree to determine if a FPIS Wall Assembly is required to comply with NFPA 285 testing

These documents explain building code requirements relating to NFPA 285 testing requirements and the use of the alternative materials provision of the code to extend those test results to similar wall assemblies of equal or better performance in assemblies using foam sheathing.

This decision tree will help you determine whether the building code actually requires the assembly to be NFPA 285 compliant. (Click image to enlarge.)