PRANCE metalwork is a leading manufacturer of metal ceiling and facade systems.
what substrate to use with acm panels
The optimal substrate for ACM panels in aluminum facade and ceiling systems is an aluminum framing assembly engineered to support loads, maintain alignment, and accommodate thermal movement. For exterior facades, vertical aluminum mullions spaced per wind-load calculations connect to building structure. Horizontal rails (transoms) attach to mullions, forming a grid to which ACM panels fasten via concealed clips or through-fasteners. This rainscreen framing provides drainage, ventilation, and structural support.
Interior ceilings use suspended aluminum T-bar grids or custom support channels. Main runners and cross tees create module sizes matching panel dimensions (e.g., 600×600 mm or 1200×600 mm). For clip-in ceilings, specialized rails engage panel flanges; for lay-in systems, panels rest on grid flanges.
Ensure substrates are installed to tight tolerances: ±1 mm per meter for flatness and ±1 mm alignment at joints. Substrate profiles should have pre-drilled slots for clip adjustment and provision for sealant application. Galvanic compatibility—using aluminum framing with aluminum-faced ACM—prevents corrosion. A properly designed aluminum substrate maximizes ACM panel performance, longevity, and aesthetic quality.