Quick Answer
A full roof replacement in the UK costs £5,000–£25,000 in 2026 depending on property size and material. A 3-bed semi stripped and re-tiled typically costs £5,000–£12,000. Natural slate costs more — £12,000–£25,000 for a larger house. Scaffolding and VAT are included in these figures.
A full roof replacement is one of the most significant home improvement projects you can undertake — in cost, disruption, and impact on the long-term value and weatherproofing of your home. Understanding what is involved, what affects the price, and what you should expect from a reputable roofing contractor helps you budget accurately and avoid being overcharged or undersold. This 2026 guide covers everything.
In this guide
Full Roof Replacement Cost by Property Size (2026)
These figures are for a complete strip and re-tile of a pitched roof, including scaffolding, felt underlay, new battens, tiles, ridge, and hip work, and debris disposal:
| Property Type | Concrete/Clay Tiles | Reclaimed Slate | New Natural Slate |
|---|---|---|---|
| 1-bed flat/terraced | £3,500–£6,000 | £5,000–£9,000 | £7,000–£12,000 |
| 2-bed terraced | £4,500–£8,000 | £7,000–£12,000 | £9,000–£15,000 |
| 3-bed semi-detached | £5,000–£12,000 | £8,000–£15,000 | £12,000–£18,000 |
| 4-bed detached | £8,000–£18,000 | £12,000–£20,000 | £16,000–£25,000 |
| Large detached (5+ bed) | £12,000–£20,000 | £16,000–£28,000 | £20,000–£35,000+ |
Prices in London and the South East are typically 20–35% higher than the national average. Prices in Scotland, Wales, and Northern England may be 10–15% lower. Always get at least three quotes to establish the going rate in your specific area.
Material Options and What They Cost
Concrete interlocking tiles
The most common choice for re-roofing a post-1960s property. Concrete tiles are widely available, easy to work with, and cost-effective. They come in a range of colours and profiles. Lifespan: 50–70 years. Material cost: approximately £25–£50 per m².
Clay plain tiles
Traditional clay tiles are required for many conservation areas and period properties. They are more expensive than concrete but last significantly longer. Handmade clay tiles for listed buildings or conservation areas command a premium. Material cost: approximately £40–£90 per m².
Reclaimed natural slate
Reclaimed Welsh slate is the preferred choice for traditional and Victorian properties where visual character matters. Good-quality reclaimed slate is harder to source than it was, and prices have risen. Material cost: approximately £50–£80 per m².
New natural slate
New Spanish, Brazilian, or Chinese slate is available at varying quality levels. Quality matters significantly — low-grade imported slate can fail within 20–30 years. Always ask for the provenance and quality grade. Material cost: approximately £60–£100 per m².
What Is Included in a Full Roof Replacement
A complete specification for a full re-roof should include all of the following. If a quote omits any of these elements, ask why:
- Full strip of existing tiles/slates to bare rafters
- Inspection and replacement of damaged or rotten battens
- New breathable roofing membrane (underlay) — compliant with BS 5534
- New preservative-treated counter battens and tile battens
- New tiles or slates — specified material, colour, and manufacturer
- New dry-fix ridge and hip system (or mortar bedding and pointing if specified)
- New or repaired verge details
- New or repaired lead flashings at any chimneys, dormers, and abutments
- Scaffolding for the duration of the works
- Debris removal and skip costs
- 10-year workmanship guarantee minimum
Scaffolding Costs
Scaffolding is a significant component of any roof replacement and should always be included in the total price. As a guide, scaffolding for a typical 3-bed semi costs £800–£1,800 for 2–3 weeks. Detached and larger properties cost more. Be cautious of any quote that separates scaffolding as an "extra" — this is sometimes used to make the initial price look lower than it really is.
What Affects the Cost of a Roof Replacement
Beyond property size and material choice, these factors move the price significantly:
- Roof pitch — Steeper roofs are more difficult to work on and may require additional safety measures
- Number of dormers, valleys, and chimneys — Each is a potential leak point requiring careful flashing work, adding time and cost
- Roof deck condition — Replacing rotten decking adds cost
- Access difficulty — Tight urban plots with limited access for scaffolding cost more
- Whether you are in a conservation area — Restricted materials, especially clay or reclaimed slate, add cost
Before committing to a full replacement, it is worth understanding whether repair might suffice. Our guide to when to repair vs replace your roof covers the decision framework. For repair cost context, see our roof repair cost guide. And for advice on how long different roofing materials actually last before replacement is needed, see our guide to roof lifespans. When you are ready to choose a contractor, our guide to vetting a roofer explains what to check.
Frequently Asked Questions
How long does a full roof replacement take?+
A 3-bed semi-detached takes 3–7 days on site. A larger detached house with complex roof features can take 1–3 weeks. Weather is a significant factor — roofers cannot work safely in strong winds or heavy rain, which can extend the programme.
Do I need planning permission for a roof replacement?+
In most cases, replacing a roof with the same or similar materials is permitted development and does not require planning permission. However, if you are in a conservation area, changing materials (e.g. from concrete tiles to slate) may require consent. Listed buildings always require listed building consent for any external alteration.
Can I get a grant for a new roof?+
There are no universal grants for roof replacement in the UK, but some local authorities offer grants or low-interest loans for essential repairs on older or low-income households. The Great British Insulation Scheme covers roof insulation rather than the covering itself. Contact your local authority or Citizens Advice for current schemes in your area.
Should I have roof insulation added during the replacement?+
Yes — a full roof replacement is the ideal time to upgrade insulation, whether in the loft floor or the roof slope. The scaffolding is already up and the cost per m² of adding insulation is much lower during a re-roof than as a standalone project.
How do I know if I am getting a fair price?+
Get at least three written quotes, all to the same specification. Prices more than 30% below the others should be treated with caution — they may indicate lower-quality materials, unregistered labour, or missing elements. Check all contractors are insured and able to provide references for completed jobs.
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