Last reviewed: 19 September 2026
Slate roof replacement cost in the UK
A full natural slate re-roof is the upper pitched covering in the RoofCost UK model: about £140–£230 per m², or whole-house planning totals such as £11,000–£22,000 on a typical 3-bed semi. That is a complete replacement, not the cost of clipping a few slipped slates back into place.
Natural slate rates and house totals
House totals are the slate column from the new roof cost table. The £/m² rate is the model’s natural-slate covering band, not a heritage Welsh extra.
| Measure | Planning band | Notes |
|---|---|---|
| Natural slate covering | £140–£230/m² | Typical natural slate, not listed-building extras |
| Artificial slate covering | £95–£160/m² | Different product; do not mix the bands |
| Mid-terrace total | £8,000–£16,000 | ~45–65 m² typical covering |
| 3-bed semi total | £11,000–£22,000 | ~60–90 m² typical covering |
| Bungalow total | £9,000–£20,000 | ~50–95 m²; large hips still add labour |
Concrete on the same houses is the lower column of that table — see concrete tile replacement.
No contact details required to see your estimate. Choose natural slate only if that is the covering you mean; artificial slate is a separate option in the calculator.
Why slate sits above concrete
Natural slates are small, heavy, and laid with more laps and fixings per square metre than an interlocking concrete tile. Hips, valleys and verges need cutting rather than a standard dry-verge tray. The labour content is the main reason RoofCost UK does not let slate collapse into the concrete band. Material cost is the other.
- Natural versus other “slate” — fibre-cement looks similar in a photo and is planned far lower. Specify the product.
- Labour intensity — more units per m², more time on the roof, more skill at the details.
- Detailing — valleys, dormers and chimneys multiply on a slate roof because every cut is visible.
- Matching — a mixed repair of old and new slates is a different problem from a full re-cover in one consistent product.
- Roof complexity — a cut-up Victorian slate roof is not the simple 80 m² gable used in the worked example below.
Worked planning example
Full replacement, semi-detached, 80 m², natural slate, simple shape, scaffolding likely. Covering at £140–£230/m² is £11,200–£18,400 before access. The calculator currently returns £12,000–£21,300 (midpoint about £16,700) after semi-detached scaffold and waste. The same house in concrete tiles returns £7,600–£14,200. The gap is the covering, not a second chimney invented for the example.
Worked planning example from the RoofCost UK model — not a quotation, and not a price for matching salvaged Welsh slate.
What a slate re-roof quote should include
The written quote should name the slate (origin, size, grading), scaffolding, strip-off, skip, new underlay and battens, the slates, ridges, hips and verges, flashing where disturbed, and VAT. Salvage of reusable slates, sorting, and any upgrade to leadwork are easy to leave out and expensive to add later.
Planning range versus a quote
RoofCost UK is an indicative planning range for a full natural-slate replacement. A quote is measured on that roof, with a named product. A few slipped slates belong on the repair guide. For how the £/m² rate is meant to be used, see roof replacement cost per m².
Sources and methodology
Last reviewed: 19 September 2026.
Cost bands on this page are paraphrased planning figures, cross-checked against published UK home-improvement and trade-marketplace guides. They are not copied from any one publisher and they are not quotations.
- Checkatrade — Roof replacement cost breakdown 2026 (March 2026 table)
- Checkatrade — Flat roof replacement costs (2026 page / December 2024 table)
- Checkatrade — Roof repair costs 2026 (June 2026)
- Checkatrade — Roof tile replacement 2026 (April 2026)
- Checkatrade — Scaffolding costs 2026 (February 2026)
- CostToBuild — Roof replacement cost UK 2026 (21 May 2026)