Ang PRANCE metalwork ay isang nangungunang tagagawa ng metal ceiling at facade system.
What ceiling thickness is required for effective fire resistance?
An aluminum panel alone (0.7–1.0 mm) offers no rated barrier; fire resistance stems from the total assembly thickness. For a 1-hour rating, typical constructions use a single layer of 12.5 mm fire-rated gypsum or 25 mm mineral wool behind the panel, plus an intumescent coating of 0.2–0.4 mm. A 2-hour rating often doubles insulation thickness—25 mm gypsum or 50 mm mineral wool—and may increase the aluminum gauge to 1.0–1.2 mm. Joint sealants and grid accessories add a few millimeters but are crucial for continuity. Panel perforations or decorative facades require slightly more backing depth to compensate for openings. Always refer to manufacturer’s tested build-up diagrams, which specify minimum thicknesses of each layer to achieve the desired fire-resistance objective.