PUF panel thickness guide for cold rooms

Indicative thickness by application

• Above +8°C (ante rooms, AC applications): 60–80 mm typical.
• 0°C to +8°C (chilled storage, F&V, dairy, pharma): 80–100 mm typical.
• -18°C to -25°C (frozen storage): 100–125 mm typical.
• -30°C to -40°C (blast freezer): 125–150 mm typical.

Why thickness matters

Panel thickness directly affects the heat gain through walls, roof and floor. Under-insulated rooms run the refrigeration harder, consume more electricity and struggle to hold the set-point during peak Indian summer ambient.

Density and skin

• Standard PUF panel core density is typically around 40 kg/m³ ± 2.
• Skin options in India include pre-painted galvanised steel (PPGI), pre-painted galvalume (PPGL) and stainless steel — selection depends on hygiene, corrosion and budget.
• PPGL is preferred for coastal and high-humidity locations for its corrosion resistance.

Floor insulation

Frozen rooms and blast freezers require insulated floors to prevent heaving and heat ingress. The floor build-up must match the room temperature and load-bearing requirement.

Common mistakes

• Using 60 mm panels for a frozen room to save cost — leads to condensation, ice on walls and high energy bills.
• Ignoring floor insulation in a -18°C room.
• Mismatched joints and missing PU sealant at panel junctions.

How HyperCold helps

We match panel thickness, density and skin to the room temperature, ambient conditions and product — not a one-size-fits-all sheet.

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