Are metal panels for walls suitable for both interior and exterior architectural applications1

Metal panels are highly suitable for both interior and exterior architectural applications because their core attributes—durability, dimensional control, and finish flexibility—address the differing performance and aesthetic requirements of each context. Externally, metal panels function as rainscreens, cladding, or decorative façades and can be engineered with thermal breaks, rainscreen cavities, and weather seals to meet local building-envelope standards. Corrosion-resistant alloys (aluminium, stainless steel) and robust coatings (fluoropolymer PVDF, architectural powder coats) provide long-term resistance to UV, moisture, and pollutants, making them appropriate for diverse climates. Fire performance for external use can be achieved with non-combustible core options and tested anchoring systems compliant with regional codes. Internally, metal panels offer fast installation, clean detailing, and an industrial or refined aesthetic depending on finish—anodized aluminium, brushed stainless, perforated panels for acoustics, or painted panels for color. Interior applications often demand acoustic control and fire certification; perforated metal backed with mineral wool or absorptive linings can deliver both sound attenuation and fire resistance where required. Thermal expansion and fixing methods differ between interior and exterior scenarios: interior panels can use simpler cleats or magnetic fixings, while exterior systems require engineered brackets and movement joints. In both cases, prefabrication ensures tight tolerances and consistent surface appearance. Because the same metal families and finishes can be used indoors and outdoors, architects can create a cohesive material language that bridges interior and exterior spaces. Proper specification—surface finish, core material, fixings, and insulation—ensures metal panels meet functional requirements across both domains.