The most common question buyers ask about Great Wall insulated aluminum panels is simple: how thick do I need? Too thin and your building overheats and cooling bills soar; too thick and you overpay. For hot climates like the Gulf and Southeast Asia, here is how to choose.
Thickness, U-value and Application
| Thickness | U-value (W/m²K) | Recommended use in hot climate |
|---|---|---|
| 50mm | 0.44 | Open or non-cooled storage, sheds |
| 75mm | 0.30 | Workshops, non-AC warehouses |
| 100mm | 0.22 | Air-conditioned warehouses & factories (standard) |
| 150mm | 0.15 | Chiller rooms, pharma storage |
| 200mm | 0.11 | Freezers, frozen storage |
A lower U-value means better insulation. For most air-conditioned buildings in Saudi Arabia, the UAE and similar climates, 100mm PIR is the sweet spot – it cuts cooling load by 25-35% versus an uninsulated roof while keeping panel cost reasonable.
What Thickness Does for Your Cooling Bill
Heat gain through the roof is the single largest cooling load in a hot-climate warehouse. Moving from an uninsulated steel roof to a 100mm Great Wall panel can lower interior temperature by 10-15°C and reduce air-conditioning energy by a quarter to a third. Over a building’s life, the energy saving usually outweighs the panel cost many times over.
Quick Recommendations by Building Type
- Dry warehouse, no AC: 75mm
- Air-conditioned warehouse / logistics: 100mm
- Factory / production with AC: 100mm
- Chiller / cool room (0-4°C): 150mm
- Freezer (-18 to -25°C): 200mm
- Poultry / livestock housing: 75-100mm
When in doubt in a hot climate, go one step thicker rather than thinner – the extra insulation pays back through lower cooling costs for the life of the building.
Request a Quote
GSM BuildTech manufactures and exports insulated aluminum Great Wall roof and wall panels from China to the Middle East and Southeast Asia. Send your area (m²), thickness, and destination port for a 24-hour quote.
WhatsApp: +86 155 2274 6824 | Get a Quote
Related: Great Wall panel specs & pricing · China supplier page · Download spec sheet (PDF)