🧱 Overview
Roof Wizard’s estimates come from an accurate 3D model of the roof (and walls where needed). Once the model is built and materials are applied, Roof Wizard calculates quantities and labour automatically—no manual formulas required.
📐 Area-based materials (roofing & cladding)
Panels, tiles, shingles, membranes
Area items (like metal panels, tiles, shingles/shakes, membrane coverage, wall cladding) are quantified by simulating the actual laying pattern across each roof plane (or wall area), with your settings applied for:
Pitch (where relevant)
Overlap/laps
Waste/offcuts
Allowances and rounding rules
Offcut reuse (block-cutting)
For metal workflows, the block-cutting feature can reuse suitable offcuts from one section on another to help minimise waste.
📏 Linear items
Flashings, gutters, ridges, edges
Linear items are calculated from the real measured geometry of your model, such as:
Flashings / trims
Gutters
Ridges / hips / valleys
Edges / barge-rake / eaves
They’re reported per metre (AU) or per foot (US) based on your setup.
🔩 Accessories and hardware
Screws, clips, brackets (and more)
Accessories (clips, screws, brackets, fixings, etc.) are calculated automatically using rules you define, for example:
Per linear metre / per foot
Per panel
Per end / per edge
Per piece / per area
Per fixture (if required)
🧑🔧 Labour costs
Labour linked to materials and tasks
Labour costs are associated with each material or task, and calculated using your configured rates. Labour can be set up as:
Per area (m² / sq ft)
Per length (m / ft)
Per item (each)
Labour multipliers for pitch and storey
To better reflect job difficulty, labour can also be multiplied using factors like:
Pitch increase (steeper roofs = higher labour factor)
Storey/height increase (multi-storey access = higher labour factor)
So your estimate can better match real-world installation conditions.