12mm vs 16mm Polycarbonate Sheet — Which Is Better for Roofing?
For architects, structural consultants, and contractors, the choice between 12mm and 16mm multicell polycarbonate impacts U-value, span capability, light transmission, and project cost per sq.ft. Here is the technical comparison.
What Is Multicell Polycarbonate?
Multicell polycarbonate sheets are hollow structured panels with multiple internal walls that improve thermal insulation (low U-value), increase impact resistance, reduce sheet weight compared to solid panels, and allow diffused natural daylight.
They are widely used for industrial roofing, skylights, railway platforms, airport canopies, commercial façades, and warehouse daylight panels.
Technical Comparison
Thermal Performance & U-Value
For factories running 10–12 hours daily, the difference in U-value between 12mm and 16mm significantly impacts electricity bills. If your project targets ECBC compliance, LEED documentation, or reduced HVAC cost, 16mm is the safer technical choice.
Application-Based Selection Guide
Cost vs Long-Term Value
12mm has a lower initial cost and works well for budget-sensitive, small commercial, or temporary structures. 16mm has a higher upfront cost but delivers better lifecycle ROI through energy savings and wider structural spans — which can reduce steel consumption enough to offset the material premium.
In modern industrial roofing and infrastructure projects, 16mm multicell polycarbonate is increasingly becoming the preferred specification. For commercial and mid-size roofing projects, 12mm remains a cost-effective solution.
Coxwell Multicell is available from 6mm to 40mm thickness. Our technical team can recommend the right specification for your span, climate zone, and energy code.
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