Metal roofing
- Corrugated and trapezoidal sheeting
- Standing-seam and concealed fix
- Colorbond and zinc finishes
- Skylight and translucent sheets
ASMM / ANZSMM · Roofing · NPWC 05 RF
Roofing Estimating
Roof area, sheeting, tiles, flashings and fixings measured in metric, in 24 to 48 hours
A roof is a pitched surface, so plan area is never the answer. Pitch, overhangs, valleys, hips, penetrations and wind-region fixing requirements all change the quantity, and Australian roofs add heavy insulation and sarking requirements on top.
We work out the true roof area from the roof plan and pitch, list every ridge, hip, valley and flashing in lineal metres, and add the sheeting, tiles, battens, sarking and fixings your supplier needs for a quote.
True roof areaPitch and overhangs included
Lineal metresRidges, valleys and flashings
Wind regionsFixing density noted
InsulationSarking and batts
Deliverables
What You Actually Receive
| Deliverable | Format | Detail level |
|---|---|---|
| Roof area by type | Excel, m² | Metal sheet, tile and membrane separated, by pitch |
| Flashings and trims | Excel, m | Ridge, hip, valley, apron and barge flashings |
| Battens and sarking | Excel, m / m² | Sarking, battens and counter-battens |
| Penetrations and accessories | Excel, No. | Vents, skylights, flues and brackets |
| Gutters and downpipes | Excel, m / No. | Box and eave gutters, rainheads and downpipes |
| Priced estimate | Excel + PDF | Supply and installation, with GST on its own line |
| Marked-up roof plan | Colour-coded areas for audit |
Australian Framework
How This Work Fits Into the Australian Standards
Every estimate is structured to the trade sections used for tendering and to the elements used for early cost plans, so one set of quantities serves both.
| Trade section (ASMM / ANZSMM) | Element (NPWC / AIQS) |
|---|---|
| Roofing / Waterproofing / Cladding | 05 RF Roof / Insulation & Cladding |
Scope Coverage
Roofing Work We Measure
Everything between the battens and the sky.
Tiles & shingles
- Concrete and terracotta tiles
- Ridge and hip capping
- Battens and sarking
- Bedding and pointing
Flat & membrane roofs
- Single-ply and bitumen membranes
- Liquid-applied systems
- Falls, screeds and sumps
- Roof gardens
Flashings & drainage
- Ridge, hip and valley flashings
- Parapet and wall flashings
- Box gutters and sumps
- Eaves gutters and downpipes
Insulation & ventilation
- Sarking and foil
- Ceiling and roof insulation
- Ridge and whirlybird vents
- Eaves ventilation
Our Process
Start a Project →
How We Prepare Your Estimate
Five steps from your drawings to a roofing number you can defend in a scope review.
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01
Scope review
An estimator reads the roof plan, elevations, sections, roofing specification and the wind region noted on the drawings before touching a takeoff tool, and lists every assumption, exclusion and missing item as a query for you to confirm. Nothing is priced on a guess.
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02
Digital measurement
Quantities are measured digitally in Bluebeam Revu, PlanSwift or On-Screen Takeoff, in metric: square metres of roof by pitch and type, lineal metres of ridge, valley and flashing, and counts of penetrations. Each measurement sits on a named layer, so the marked-up PDF you receive is a visual audit trail.
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03
Pricing
We price the quantities using current Australian supplier quotes, subcontract rates and published benchmarks such as Rawlinsons, adjusted for your postcode and state. If you give us your own rates or a preferred supplier schedule, we use those.
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04
Senior QA review
Before anything is sent, a second estimator compares the takeoff with the drawings and verifies the measuring rules, deductions, wastage allowances and productivity assumptions.
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05
Delivery
Excel and PDF files reach your inbox within one to two days for standard jobs. One round of changes is included, and we remain available for tender queries and scope questions after the tender.
Tooling
Software We Work In
You do not have to hold a licence for these tools. We do the measuring with them and hand over the results.
Bluebeam Revu
Measuring, marking and comparing drawings on screen.
PlanSwift
Takeoffs made from ready-built assemblies, with quantities you can export.
On-Screen Takeoff
Layer-based measuring on big commercial drawing sets.
Rawlinsons-benchmarked rates
Up-to-date Australian unit rates, compared with supplier and subcontractor quotes.
Microsoft Excel
The final file, set out to match your cost codes and trade sections.
If you use Buildsoft, CostX, Estimate One, Procore or your own template, let us know and we will prepare the file so it imports straight in.
Turnaround & Pricing
Cost and Delivery Time
We quote a fee for each project before starting, in AUD excluding GST. We never bill by the hour, and you are never charged more than the quote.
Small / residential scope
24 hoursSingle dwellings and small roof replacements.
Typical fee A$350 to A$850
Mid-size commercial
24 to 48 hoursWarehouses, retail and mid-size commercial roofs.
Typical fee A$850 to A$1,800
Large / complex
48 to 72 hoursLarge industrial and multi-building roof packages.
Typical fee A$1,800 to A$3,600
Monthly takeoff package
OngoingA set number of estimates every month, with your jobs placed first in the queue.
Flat monthly rate from A$2,200/mo
Cost vs. Capacity
Why Builders Hand Roofing Estimating to Us
A full-time estimator is a salary, super, software seats and training. A roofing takeoff from us is a per-project cost that only appears when you are actually tendering.
- No software licences. Takeoff and cost-data subscriptions cost thousands of dollars per user each year. With us, you use ours.
- Tender more, more selectively. Most builders do not lose jobs through bad pricing. They lose them because they run out of time to reach enough tenders before closing.
- Site time stays site time. Items get overlooked when estimating at 9pm after a long day on site.
- Independent accuracy check. Even builders with in-house estimators use us to sanity-check large or unfamiliar roofing scopes before they submit.
- Moves up and down with how busy you are. Five takeoffs in a busy month and none in a slow one. You never carry a fixed cost.
Who We Work With
Made for Anyone Pricing Roofs
Roofing contractors
Takeoffs of area, flashings and fixings.
Builders
Roof allowances and subcontract checks.
Roof suppliers
Sheet and tile counts for quoting.
Insurance repairers
Re-roofing and storm repair work.
Architects
Cost advice on roof forms.
Quantity surveyors
Roof element costs.
Sample Output
Sample Line Items
Every estimate has this much detail: quantities tied to elements and measured in metric, never lump sums.
| Item | Unit | Qty | Material | Labour | Total |
|---|---|---|---|---|---|
| Colorbond trapezoidal sheet, 0.42 mm | m² | 486.0 | $ | $ | $ |
| Ridge capping | m | 38.5 | $ | $ | $ |
| Valley gutter | m | 22.0 | $ | $ | $ |
| Sarking, foil-faced | m² | 486.0 | $ | $ | $ |
| Roof battens | m | 1,240 | $ | $ | $ |
| Skylights | No. | 4 | $ | $ | $ |
These example items show only the layout and units. They do not come from a client project.
FAQ
Common Questions
How do you measure roof area?
From the roof plan, with a pitch factor applied to each plane, plus overhangs, valleys and hips. We do not use plan area as a shortcut.
Do you allow for wind region fixings?
Yes, the fixing density follows the wind region and terrain category noted on the drawings or engineering.
Can you price tile and metal separately?
Yes, and you can compare options side by side.
Are insulation and sarking included?
Yes, as separate lines.
Which states and territories do you cover?
Every one. Prices are set for your project postcode and state, so a job in Darwin and a job in Melbourne get their own unit costs instead of one national average.
What does it cost?
A fee is quoted per project, in AUD excluding GST, before any work starts. You approve it in writing first. There is no hourly billing and no invoice larger than the quote.
How fast is turnaround?
Standard scopes ship in 24 to 48 hours. Large packages take 48 to 72 hours. If you are against a closing time, say so when you upload and we will tell you honestly whether we can meet it.
Are my project details kept confidential?
Yes. We keep drawings, specifications and tender figures private, and if you prefer we will sign your NDA before we receive any documents.
Ready to Get Started?
Ready for Your Next Roofing Tender?
Send your drawings along with a short note on what the job covers. A fee and delivery date come back the same working day, and the finished estimate follows within one to two days of your approval.