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Roofing cost per m², built up properly
Start from the benchmark — published wages, a real gang, the costs on top of wages most people forget — then move anything you disagree with. The whole sum stays on the page.
The working
- 2 × tradesperson at £16.40
- £32.80
- Gang wage, per hour
- £32.80
- + 35% on top of wages
- £44.28
- × 8 hours on the tools
- £354.24 a day
- Strip tiles and battensoff and away to the scaffold£354.24 ÷ 35 m² × 1.20 = £12.15/m²
- Felt and battenbreathable underlay, battens to gauge£354.24 ÷ 50 m² × 1.20 = £8.50/m²
- Re-tile — interlocking concrete10.5 tiles to the m²£354.24 ÷ 35 m² × 1.20 = £12.15/m²
- Re-tile — plain tile or slate60 to the m² — pick one tile typeslid to zero — out of the price
Benchmark
£32.80/m² labour
CIJC rates · tradesperson £16.40/hr · gang of 2 · 35% on top · overheads and profit 20%
Materials, scaffold and supervision are not included in this rate.
What’s in this?
- Employer's National Insurance — 15% above £5,000 a year
- Holiday pay — 12.07%
- Pension, auto-enrolment minimum — 3%
- CITB levy — 0.35% of payroll
- Sick pay, training and employer's liability insurance — the remainder
- At 0% this is a CIS subcontractor's labour price — National Insurance, holiday and pension are then theirs to carry, not the job's.
The location range is authored, not measured — our tender data says what was bought where, not what labour costs there.
Price a whole job with this ratePut in the job size and your lump sums — scaffold, plant, skip — and get the job total.
Put a job size in and the total appears here.
Where these benchmarks come from
The wages are the published national minimums agreed by employers and unions — not our estimate, and updated each July. The extras on top of wages are the pieces employers genuinely pay: employer’s National Insurance, holiday, pension and the CITB levy. The outputs — how much a gang gets through in a day — are blended from published estimating guides and stated on every card, because they are the part worth arguing with.
That is why every control is on the page. If you think a bricklayer lays more than 500 bricks a day, slide it — the benchmark is where the sum starts, not where it has to finish. Nothing you set here is saved or sent anywhere.
Pricing a job like these?
HubTrack is where small construction firms keep their compliance documents, their jobs and their evidence trail in one place — method statements and risk assessments prepared for you to check and sign off, and a record of who signed what and when. The same engine that reads the contract documents behind this page reads yours inside HubTrack.