Heat Flow Out (Winter)

Heat Flow In (Summer)

Cathedral 25 view RT1.8 RT4.1
Super 15 view RT1.5 RT3.8
Ultra 20 view RT1.6 RT1.0
RT - R-values displayed are "total system R-values", as required by the Energy Provisions of the Building Code of Australia.

Calculation is based on the use of the Foilboard® Insulation Panel only. Under no circumstances can this calculation be used in conjunction with any alternative product, as results will vary.