Heat Flow Out (Winter)

Heat Flow In (Summer)

Cathedral 25 view RT2.6 RT2.4
Excel 30 view RT2.8 RT2.5
Standard 10 view RT2.2 RT2.1
Super 15 view RT2.4 RT2.2
Superior 40 view RT1.0 RT2.8
Ultra 20 view RT2.5 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.