As NFPA 285 is an assembly test, building product manufacturers generally must test their materials within many different wall assemblies.
To avoid the impracticality of testing every possible combination of materials in an assembly,
engineering analysis may be permitted in whatsapp number database accordance with IBC Section Alternative materials, design, and methods of construction and equipment.”
Additionally, some code reports—such as those issued by International Code Council Evaluation
Service (ICC-ES), applicable across all jurisdictions
specifically allow engineering analysis by independent laboratories to extend the NFPA 285 test results. Such analysis might include cone calorimeter
flammability testing to determine if a proposed alternative websense solutions increase employee internet productivity material performs.
the same or better than a given NFPA 285-compliant product. (For additional discussion, see “NFPA 285: Engineering Extension of Tested Assemblies
Using rigid-foam insulation in NFPA 285-compliant assemblies
As rigid-foam insulations are combustible, they
must pass as components within NFPA 285-tested assemblies to be used as CI. The rigid foams commonly used in wall assemblies are:
- polyisocyanurate (polyiso);
- expanded polystyrene (EPS); and
- extruded polystyrene (XPS).
Each of these insulation types has been used in NFPA 285-compliant wall assemblies, although some are better-suited for certain types of assemblies than mobile lead others. It is also important to remember even if a specific manufacturer’s polyiso, EPS, or XPS product has passed the test, it does not mean other manufacturers’ products of the same type have also passed.