What is the difference between AIR-CELL® and sarking?
While sarking is just a vapour barrier, AIR-CELL® is both a vapour barrier and an insulation material in one application. AIR-CELL® includes the encapsulated air cell structure with foil surfaces on either side, whereas sarking is only a single layer of foil. Because of this structure AIR-CELL® has significant conductional resistance properties while sarking does not have any resistance to conductional heat transfer. Designed primarily as vapour barriers, most sarkings do not have highly reflective foil surfaces which greatly limits their ability to reflect radiant heat. AIR-CELL® Insulation’s plain foil surfaces reflect up to 97% of radiant heat.
