“Fire resistant” describes material properties; “fire rated” refers to a certified assembly tested as a complete ceiling system under recognized standards.
Rawatan sendi—jalur intumescent, mastik berkadar api, dan kolar api—mengelak antara muka panel dan menghalang nyalaan, asap, dan penghijrahan gas panas antara modul siling.
Siling gantung aluminium berkadar api bergantung pada salutan intumescent, papan api gipsum, penebat bulu mineral dan panel aluminium berkadar api sebenar.
Rintangan api yang berkesan bergantung pada ketebalan gabungan panel aluminium (0.7–1.2 mm) ditambah penebat belakang (gipsum atau lapisan bulu mineral keseluruhannya 25–Kedudukan 50 mm sejam).
Certifed fire-rated suspension systems use galvanized steel grids with fusible links or fire rods, engineered to collapse and seal plenum openings at target temperatures.