Roofing Calculator

Do you want to determine the minimum NCC Deemed-to-Satisfy (DTS) performance for your project?

Select Building Class

Building class info.

Select State or Territory

Select Nearest Location

Select Roof

Please refer to the energy assessment for your project for thermal performance requirement targets.

Select a roof type:

Roof Pitch		Roof Pitch must be between 1 and 30.
What is your ceiling Type?
Do you have Vents on the roof?
What is your Roof Structure?
Is the roof being built in a Cyclonic Zone?
What is the average spacing of your purlins in mm?
Are you Building with Timber Frame or Metal Frame?
What is your timber truss spacing in millimeters?
What is your truss spacing in mm?
What is your rafter spacing in millimeters?
What are your Rafter Width?
What are your Rafter Depth?

	Input	Material R-Value
		Summer	Winter
Outdoor Air Film		{{result.OutsideAirFilm.Summer}}	{{result.OutsideAirFilm.Winter}}
Metal Roof		{{result.RoofType.Summer\| number:2}}	{{result.RoofType.Winter\|number:2}}
Air Cavity		{{result.FirstAirSpace.Summer\| number:2}}	{{result.FirstAirSpace.Winter\| number:2}}
Roof Insulation or Sarking		{{result.RoofInsulationType.Summer\| number:2}}	{{result.RoofInsulationType.Winter\|number:2}}
Roof Cavity (size in mm)	Roof Cavity must be greater than or equal to 20mm.	{{result.SecondAirSpace.Summer\| number:2}}	{{result.SecondAirSpace.Winter\| number:2}}
Ceiling Insulation		{{result.CeilingInsulationType.Summer \| number:2}}	{{result.CeilingInsulationType.Winter \| number:2}}
Ceiling Lining		{{result.CeilingLiningType.Summer \| number:2}}	{{result.CeilingLiningType.Winter \| number:2}}
Indoor Air Film		{{result.InsideAirFilm.Summer \| number:2}}	{{result.InsideAirFilm.Winter \| number:2}}

Total R-Value		{{result.SystemThermalPerformance.Summer \| number:1}}	{{result.SystemThermalPerformance.Winter \| number:1 }}
DTS System Requirement		{{formData.DTSSummerValue}}	{{formData.DTSWinterValue}}
{{dtsRequirementMessage}}

Roof Pitch		Roof Pitch must be between 5 and 30.
What is your ceiling Type?
Do you have Vents on the roof?
What is your timber truss spacing in millimeters?
What is your rafter spacing in millimeters?
What are your Rafter Width?
What are your Rafter Depth?

	Input	Material R-Value
		Summer	Winter
Outdoor Air Film		{{result.OutsideAirFilm.Summer}}	{{result.OutsideAirFilm.Winter}}
Tile Roof	Concrete or Terracotta	{{result.RoofType.Summer\| number:2}}	{{result.RoofType.Winter\|number:2}}
Air Cavity		{{result.FirstAirSpace.Summer\| number:2}}	{{result.FirstAirSpace.Winter\| number:2}}
Roof Sarking		{{result.RoofInsulationType.Summer\| number:2}}	{{result.RoofInsulationType.Winter\|number:2}}
Roof Cavity (size in mm)	Roof Cavity must be greater than or equal to 20mm. {{secondAirSpaceTextToDisplay}}	{{result.SecondAirSpace.Summer\| number:2}}	{{result.SecondAirSpace.Winter\| number:2}}
Ceiling Insulation		{{result.CeilingInsulationType.Summer \| number:2}}	{{result.CeilingInsulationType.Winter \| number:2}}
Ceiling Lining		{{result.CeilingLiningType.Summer \| number:2}}	{{result.CeilingLiningType.Winter \| number:2}}
Indoor Air Film		{{result.InsideAirFilm.Summer \| number:2}}	{{result.InsideAirFilm.Winter \| number:2}}

Total R-Value		{{result.SystemThermalPerformance.Summer \| number:1}}	{{result.SystemThermalPerformance.Winter \| number:1 }}
DTS System Requirement		{{formData.DTSSummerValue}}	{{formData.DTSWinterValue}}
{{dtsRequirementMessage}}

	Material R-Value
	Summer	Winter
Outdoor Air Film	{{cSummerOutsideAirFilm}}	{{cWinterOutsideAirFilm}}
Concrete Roof	{{result.RoofType.Summer\| number:2}}	{{result.RoofType.Winter\|number:2}}
Underslab Insulation	{{result.RoofInsulationType.Summer\| number:2}}	{{result.RoofInsulationType.Winter\|number:2}}
Roof Cavity (size in mm)	{{result.SecondAirSpace.Summer\| number:2}}	{{result.SecondAirSpace.Winter\| number:2}}
Ceiling Insulation	{{result.CeilingInsulationType.Summer \| number:2}}	{{result.CeilingInsulationType.Winter \| number:2}}
Ceiling Lining	{{result.CeilingLiningType.Summer \| number:2}}	{{result.CeilingLiningType.Winter \| number:2}}
Indoor Air Film	{{result.InsideAirFilm.Summer \| number:2}}	{{result.InsideAirFilm.Winter \| number:2}}

Total R-Value	{{result.SystemThermalPerformance.Summer \| number:1}}	{{result.SystemThermalPerformance.Winter \| number:1 }}
DTS System Requirement	{{formData.DTSSummerValue}}	{{formData.DTSWinterValue}}
{{dtsRequirementMessage}}

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