Foil Faced Lamella

components: 

recommended insulation thickness in mm (particular project specifications may differ): 

Chilled and dual-purpose ducts

BS5422:2009 (table 14) - Control Heat Transfer

Whilst it is impossible to account for all scenarios, the following act as general guides:

50mm thick

These thicknesses may not satisfy all criteria and design requirements.

Warm air ducts

BS5422:2009 (table 13) - Control Heat Loss

Whilst it is impossible to account for all scenarios, the following act as general guides:

Within Building 40mm thick, Plant rooms & external locations 50mm thick

These thicknesses may not satisfy all criteria and design requirements.

Chilled air in ambient conditions

BS5422:2009 (table 12) - Condensation Control

Whilst it is impossible to account for all scenarios, the following act as general guides:

Within Building 40mm thick, Plant rooms & external locations 50mm thick

(min air inside duct 15 degC)

These thicknesses may not satisfy all criteria and design requirements.