Based on Insulation

Surface Finish Types	Top & Bottom Sheet Material Types	Insulation Types
Plain	Pre-Painted Aluminum	Polyurethane (PUR)
Corrugated	Mill Finish Aluminum	Polyisocyanurate (PIR)
	Pre-Painted Galvanized Steel	Mineral Wool /Rock Wool
	Mill Finish Galvanized Steel	Expanded Polystyrene (EPS)
	Pre-Painted AluZinc
	Mill Finish AluZinc

Specification of Top & Bottom Profile Sheet Material
Aluminum	Grade A3105 H 16 in mill finish or pre-painted
Galvanized Iron sheets ( GI)	ASTM A653 or other equivalent standards like JIS 3302 , EN 10326/10327 , IS 277 with Zinc Coating G60-180 gms/m2 or G90-275 gms/m2
Galvanized Iron sheets ( GI)	ASTM A792 with Coating AZ60-AZ180

Combinations of Top Skin and Liner
Top Skin	Liner
GI Mill Finish	GI Mill Finish
GI Polyester Coated	GI Polyester Coated
GI PVDF Coated	GI PVDF Coated
Aluminum Mill Finish	Aluminum Mill Finish
Aluminum Polyester Coated	Aluminum Polyester Coated
Aluminum PVDF Coated	Aluminum PVDF Coated
Alu-Zinc alloy coated steel mill finish	Alu-Zinc alloy coated steel mill finish
Alu-Zinc alloy coated steel PVDF coated	Alu-Zinc alloy coated steel PVDF coated
	Aluminum Foil 0.05mm thick

Thermal Conductivity Value : Amount of heat (W) passing through a material having surface of 1 M2 and thickness 1 M in order to rise temperature by 1oC . Units are W/m K
K value (Insulation Value) : Thermal conductivity divided by thickness of the material [ W / m2 K]
U value (Total Insulation Value) : Also known as Overall Heat Transfer Coefficient determined by the insulation value of the various materials forming the panel . [ W / m2 K ] , KCal/m2 h oC , BTU/ F t2 h oF