Heat Flow Out (Winter)

Heat Flow In (Summer)

Cathedral 25 view RT3.3 RT2.4
Excel 30 view RT3.4 RT2.5
Standard 10 view RT1.0 RT2.1
Super 15 view RT3.1 RT2.2
Superior 40 view RT3.7 RT2.8
Ultra 20 view RT3.2 RT2.3
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.