What thickness of insulation can be used?
Insulation thickness values ranging from 25mm (1″) to 250mm (10″) have been used successfully. The minimum recommended thickness is 38 mm (1.5″) for horizontally poured panels and 50mm (2″) for vertically poured walls. A thickness greater than 75mm (3″) is normally built-up from multiple layers of insulation. The required insulation thickness can be determined using a thermal analysis that incorporates consideration of the building use, location and potential vapor drives in low temperature applications.
