Heat Flow out (Winter) : RT
Heat Flow in (Summer) : RT
The Flexifast fastener is an adjustable bracket / clip that can be fixed to any depth, optimising the still air gap and maximising the thermal value.
Used to retrofit on underfloor joists, along with factory lining and vaulted roofs.
RT - R-values displayed are "total system R-values", as required by the Energy Provisions of the Building Code of Australia.