How do different core materials affect ACP panel performance?

The core material in ACP panels dictates key performance attributes. Standard polyethylene (PE) cores offer cost-effective, lightweight panels but have poor fire resistance. Fire-retardant (FR) cores blend PE with mineral fillers, enhancing flame resistance to meet Class B/BS1d0 ratings. Non-combustible mineral cores (A2) eliminate polymer content entirely, achieving top fire performance (EN 13501-1 A2).

Beyond fire, denser mineral cores improve rigidity, reducing deflection under wind or seismic loads—beneficial for large spans. They also enhance acoustic insulation and thermal resistance, with higher R-values per panel. However, mineral cores add weight and cost.

FR cores strike a balance: moderate fire rating, improved stiffness over PE, and manageable weight. For interior ceilings where fire risk is lower, FR or PE cores suffice, especially when paired with acoustic infill. Exterior high-risk façades demand mineral cores despite higher installation loads. Selecting core material requires assessing fire codes, structural demands, and acoustic or thermal targets—PRANCE guides these decisions through project-specific analysis.