UK · Updated 2026 · Explainer
Part Z & Embodied Carbon: Using Surplus Reclaimed Ridge Tiles in York
Whole-life carbon assessments are becoming mandatory on York projects. Reclaimed and surplus ridge tiles is the fastest lever for reducing A1–A3 embodied carbon in Yorkshire. This 2026 guide shows the numbers and the evidence you need.
Embodied carbon savings
Reclaimed ridge tiles typically avoids 60–95% of the A1–A3 embodied carbon of a new equivalent. On a mid-size York project this can equal 4–12 tonnes CO₂e avoided.
Part Z timeline and what it requires
- Whole-life carbon assessment on all major projects
- Reporting to a central UK register
- Alignment with RICS WLCA methodology
- Evidence of material provenance
Building a compliant evidence pack in York
- Yard invoice with weight/quantity
- Photos and batch references
- Manufacturer EPD comparison for baseline
- Site delivery notes
Cost of ridge tiles vs carbon benefit
| Grade | Typical price | Notes |
|---|---|---|
| Job-lot / bulk | £12.00 per m | Merchant clearance, palletised |
| Standard graded | £27 per m | Sorted, ready-to-fit stock |
| Heritage / premium | £42 per m | Character grade, hand-picked |
Frequently asked questions
+Is Part Z law yet?
Not yet fully — it's a private-members bill and industry alignment. Adoption on public and BREEAM projects is already widespread.
+How is carbon quantified for surplus?
A1–A3 emissions are usually set to zero for genuine reclaim; A4 (transport) uses actual distance.
+Can I use dry-fix on reclaimed ridges?
Yes if the ridge is in good condition and the profile matches system tolerances.
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