The initial research identified 78 common features of green buildings that can potentially pose fire-related risks. Green building attributes identified in the report generally fell into 8 categories:
•structural materials and systems, such as lightweight construction materials and extended solar roof panels;
•exterior materials and systems, including structural integrated panels and PVC rainwater catchment;
•facade attributes;
•interior materials, such as wood panels;
•interior space attributes;
•building systems and issues, including high-volume, low-speed fans and refrigerant materials;
•alternative energy systems;
•site issues, such as permeable concrete systems.
Potential hazards identified in the report include:•Lightweight engineered lumber that uses less material than typical lumber could present additional risks during fires because it may collapse more quickly than conventional timber construction.
•Vegetative roof systems present a flames spread concern and may affect firefighter access and operations.
•Rigid foam insulation and spray-applied foam insulation present several hazards, including that they are readily ignitable, produce significant smoke, show a faster fire growth rate, and potentially cause toxicity and explosion hazards.
•Exterior solar shades and awnings may affect occupant evacuation during a fire.
•Double-skin facades and cavity walls have the potential to cause additional spread of smoke and flames if system failure occurs.
An article in NFPA Journal provides more information.