Roofer Calculator Tool
Do you want to determine the minimum NCC 2016 Deemed-to-Satisfy (DTS) performance for your project?
Select Building Class | Building class info. | |||
Select State or Territory | ||||
Select Nearest Location | ||||
Select Roof | ||||
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Please refer to the energy assessment for your project for thermal performance requirement targets.
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? |
Add roof elements:
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}} |
Compiled roof
Please complete:

Please rotate your device to landscape
orientation for the best viewing experience
