*10mm polycarbonate shed* means a shed using *10mm thick multiwall polycarbonate sheets* for roofing or walling. It’s used when you need natural light + strength + heat insulation.
I’m assuming you meant *polycarbonate*, not "polecarbonet".
*1. What is 10mm Polycarbonate Sheet?*
- *Type*: Multiwall/twin-wall or triple-wall hollow sheet. 10mm is the overall thickness.
- *Structure*: 2 or 3 layers with air gaps in between = insulation.
- *Material*: Virgin polycarbonate with UV protection layer co-extruded on top side.
- *Light transmission*: 55–80% depending on color. Clear = 80%, Opal/white = 55%, Bronze = 35%.
- *Weight*: ∼1.7 kg/m². Very light vs 5–6 kg/m² for GI sheet.
*2. Key Features vs GI/UPVC Sheet*
*Advantages*
- *Natural light*: Saves daytime lighting cost. Used for warehouses, workshops, parking, walkways.
- *Impact strength*: 200x stronger than glass. Won’t crack like FRP. Hailstone safe.
- *Heat insulation*: 10mm multiwall U-value ∼2.5 W/m²K. GI sheet ∼7.1. So 60% less heat gain. Stays cooler.
- *UV protection*: Top layer blocks 99% UV. Sheet won’t yellow for 10+ years if good brand.
- *Cold bending*: Can be curved for dome/barrel roof. Min radius 1.75m for 10mm.
- *Fire rating*: Self-extinguishing, B1 class. Better than FRP/UPVC.
*Disadvantages*
- *Cost*: ₹220–₹350/sq ft for 10mm vs ₹55–₹85 for GI, ₹110–₹160 for UPVC.
- *Scratches*: Surface can scratch. Don’t drag material on it.
- *Expansion*: Expands 3mm/m per 40°C temp change. Needs proper fixing with allowance.
