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Environmental thickness of insulation for ductwork carrying warm air to control heat loss
Temperature difference between air inside ductwork and ambient air.10°C
Thickness of phenolic insulation required by BS5422: 2001.20 mm
Thickness of mineral fibre required by BS5422: 2001.33 mm
Thickness of Insulation for Ductwork Carrying Chilled Air in Ambient Conditions To Control Condensation
Minimum air temperature inside duct.15°C
Thickness of phenolic insulation required by BS5422: 2001.15 mm
Thickness of mineral fibre required by BS5422: 2001.25 mm