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How accurate are the material takeoffs generated by Roof Wizard?

Roof Wizard takeoffs are highly accurate because quantities come from a verified 3D model with material simulation—not rough area estimates. Accuracy depends on good inputs (plans/measures), correct scaling, and your material/allowance setup.

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🎯 Why Roof Wizard takeoffs are so accurate

Roof Wizard is built for verifiable accuracy: quantities are extracted from a full-size 3D model you can check, rather than relying on rough 2D area approximations or rules of thumb.


👀 Built-in verification (confidence before you report)

Before you generate reports, you can visually inspect and check the 3D model. This checking step helps you catch errors early—because if the model is correct, the takeoff/quote will be correct.


🧱 Material simulation (not just “area × rate”)

Roof Wizard can simulate the application of materials onto the model, so overlaps, complexity, and cut patterns are accounted for in the takeoff.

Tile / shingle / shake coursing

For tiles, shingles, and shakes you can use coursing (laying pieces on the model course-by-course), which is especially precise on cut-up roofs with lots of hips/valleys/dormers.

Metal waste reduction (offcuts)

For metal, tools like Block-Cutting / offcut methods help optimise cut lists by re-using offcuts where possible—reducing waste and improving accuracy of what’s actually needed.


💰 What this accuracy means for your business

When your takeoff reflects the real roof geometry + real material application, it typically leads to:

  • Less over-ordering

  • Fewer shortfalls on site

  • Tighter, more defensible margins and reports


📐 What affects accuracy the most (best-practice checklist)

  • Input quality: plans/site measures must match reality

  • Correct scaling: especially for PDF/aerial underlays

  • Material setup: overlaps/coverages/allowances must match your installation standards

  • Model checking: always run through the built-in checking process before estimating

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