Sandwich panels for industrial walls and roofs
See also: Food and Beverage · Agriculture, Animal Feed and Animal Care
What it is
Sandwich panels for industrial walls and roofs are a family of products with the same basic construction as insulated metal roofing (two metal faces with rigid PU foam core), but in larger formats and with different structural requirements. Panels can be 10 to 18 meters long, with widths of 1 to 1.2 meters and thicknesses of 40 to 200 mm. They are used as complete envelope elements — they replace the traditional construction of masonry + internal insulation + external finish with a single integrated solution.
The category covers three main subdivisions: wall panels (used in elevations of industrial sheds, commercial buildings, DCs, supermarkets, and production plants), roof panels (used in roofs of the same buildings, with specific profile for rain drainage), and cold storage panels (specific for cold rooms and controlled environments, with higher thickness and superior sealing). The predominant core is rigid PU foam; the main alternative on the market is mineral wool (greater fire resistance, lower thermal performance and greater mass).
Wall and roof panels typically use density between 38 and 45 kg/m³. Cold storage panels use higher densities (45–50 kg/m³) and specialized PIR systems for enhanced fire resistance and thermal stability at negative temperatures.
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Value proposition
Thermal envelope comparison — vs. traditional construction systems:
| Envelope system | Equivalent lambda (W/m·K) | Thickness for R=4 |
|---|---|---|
| PIR sandwich panel (40 kg/m³) | 0.022 | 88 mm |
| PUR/PIR sandwich panel | 0.024 | 96 mm |
| Ceramic block + external EPS | 0.10 (assembly) | ~400 mm |
| Masonry + mineral wool | 0.06 (assembly) | ~240 mm |
| Reinforced concrete + polystyrene | 0.08 (assembly) | ~320 mm |
Tangible end-customer benefits:
- Structural weight reduction: a PU sandwich panel weighs 10–15 kg/m² vs. 200–300 kg/m² for a masonry wall — significant reduction in foundation costs, especially on difficult soils
- Construction speed: installation 5 to 10 times faster than conventional masonry with separate insulation
- Consistent quality control: panels manufactured on an industrial line have far less dimensional and thermal variation than in-situ construction
- Industrial-modern aesthetics: smooth panels allow Class A architectural finish without additional cladding
- Future flexibility: panels can be disassembled, relocated or replaced — value for buildings with adaptation or relocation expectations
Typical ROI for industrial construction (industry benchmark): A 10,000 m² industrial shed built with PU sandwich panels vs. conventional masonry delivers a 40–60% schedule reduction, 25–35% lower total construction cost and 30–45% reduction in HVAC operational consumption. Consolidated payback is typically under 24 months.
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Related applications
Insulated metal roofing (sandwich panels)
PUR/PIR system · PIR system
Closed-cell spray foam insulation
Closed-cell spray foam 2K system · Open-cell spray foam 2K system (water-blown)
Roof and slab waterproofing
1K liquid PU membrane · 2K liquid PU membrane
Structural construction adhesives
1K PU adhesive (moisture-cure) · 2K structural PU adhesive