Available
Detailed roof estimator
Enter known quantities or measure from a plan/image, choose a roofing system and build a preliminary low/high estimate.
OpenRoofHub tools
Calculations that keep the assumptions visible.
Use RoofHub to move from a broad roofing question toward real quantities. The detailed estimator can work from your own measurements or a calibrated plan/image and keeps its result separate from a formal contractor quote.
Guide + estimator
Roof area & measurement
Understand plan area, actual area and the component measurements that feed a roofing estimate.
OpenGuide live
Roof pitch & quantities
Convert plan area using pitch and see how roofing system minimum pitches differ.
OpenData guide
NZ roofing cost guide
Compare public market observations before applying them to your own measured project.
OpenOne quantity model
The same measurements should not need to be entered twice.
Roof area, ridges, hips, valleys, barges, spouting and custom items can be carried from digital takeoff into pricing. Roof type then determines which compatible pricing components are applied.
Plan / imageManual measurementsRoof quantitiesRoof systemEstimate range
Detailed estimator
Already know the measurements?
Skip the broad questions. Enter actual quantities directly and use RoofHub as a measurement-to-price workflow.