Roof Replacement Cost by Property Type and Material
Prices below are for a full strip-and-re-roof including scaffolding, felt underlay, battens, and new tiles or slates. They assume a straightforward pitched roof with no major structural repairs needed.
| Property type | Concrete tile | Natural slate | Artificial slate |
|---|---|---|---|
| Terraced (50-70 m²) | £5,000-£7,000 | £6,500-£9,000 | £5,500-£8,000 |
| Semi-detached (70-90 m²) | £6,000-£9,000 | £8,000-£12,000 | £7,000-£10,500 |
| Detached (100-150 m²) | £10,000-£14,000 | £13,000-£18,000 | £11,000-£16,000 |
| Large detached (150 m²+) | £14,000-£20,000+ | £18,000-£28,000+ | £15,000-£22,000+ |
Prices are indicative UK averages for 2026. London and South East costs typically run 20-30% higher. Always obtain at least three quotes from Federation of Master Builders-registered contractors.
Cost Breakdown per Square Metre
Breaking costs down per m² helps you estimate any size of roof quickly.
| Material | Supply cost (per m²) | Labour (per m²) | Total fitted (per m²) |
|---|---|---|---|
| Concrete tile | £25-£40 | £60-£90 | £85-£130 |
| Natural slate | £40-£80 | £70-£100 | £110-£180 |
| Artificial slate | £30-£55 | £65-£95 | £95-£150 |
| Clay tile (handmade) | £50-£100 | £70-£100 | £120-£200 |
Per-m² rates vary with pitch, access difficulty, and regional labour rates.
Factors That Affect Roof Replacement Cost
Several variables can push your final quote significantly above or below average:
- Roof area and pitch — steeper roofs require more scaffolding time and specialist labour, adding cost.
- Roofing material — natural Welsh or Spanish slate costs two to three times more than standard concrete tile.
- Scaffolding — typically £500-£1,500 for a terraced or semi, more for larger or awkward properties; always included in a reputable quote.
- Felt underlay and battens — a proper re-roof replaces these; cutting corners here shortens the roof's lifespan.
- Structural repairs — if rafters or joists are rotten, expect to add £500-£3,000+ for carpentry work.
- Chimney, skylights, and flashings — each penetration adds lead flashing and pointing costs of £200-£800+.
- Location — London and the South East carry a 20-30% premium; rural areas may have fewer local specialists.
- Planning and listed buildings — conservation areas or listed buildings may require matching original materials.
New Roof vs Re-Roof: What Is the Difference?
A re-roof (also called an overlay or recover) involves laying new tiles directly over the existing ones without stripping back to the rafters. It is cheaper — sometimes 30-40% less — but most reputable roofers do not recommend it. You cannot inspect or replace the underlay and battens, and adding extra weight to an ageing structure can cause problems.
A full roof replacement strips everything back to the bare rafters. The roofer can then inspect for rot, replace felt underlay and battens, and start with a clean substrate. This is the standard approach for any roof that has reached the end of its life, and it typically carries a 10-20 year manufacturer guarantee on the tiles.
Most UK roofers will only quote for a full replacement when the existing roof is more than 20-25 years old, as a re-roof on old timberwork can mask serious defects and lead to costly problems later.
Signs You Need a Roof Replacement
Repairs are cheaper than replacement, but there comes a point where patching is no longer economical. Look out for:
- Multiple broken, slipped, or missing tiles across the whole roof surface (not just an isolated patch).
- Sagging or bowing roof deck visible from the street — indicates rotten or damaged structural timbers.
- Daylight visible in the loft space through the roof boards.
- Persistent damp patches or water stains on top-floor ceilings, especially after replacing individual tiles.
- Roof age over 30 years for concrete tile or 50+ years for natural slate without major maintenance.
- Granule loss from felt-covered flat sections bleeding into gutters.
- Surveyor recommendation — a Level 2 or Level 3 building survey will flag roofs requiring urgent attention.
Watch Out for Rogue Traders
Roof work attracts a disproportionate number of cold-calling traders who knock doors after storms. Never accept a quote from someone who has not surveyed the roof properly from the ridge, and always insist on a written itemised quote. Check the contractor is registered with the National Federation of Roofing Contractors (NFRC) or the Federation of Master Builders. Avoid paying large upfront deposits — a reputable roofer typically asks for no more than 10-25% on materials ordering.
Plan Ahead with Our Refurbishment Planner
Our planner helps you set a realistic refurbishment reserve before you buy. Enter the property details and a roof condition flag from your survey, and the tool will factor in a provisioned roof budget alongside your other works so you can make a properly informed offer.
How to Get the Best Price on a Roof Replacement
Follow these steps to protect yourself and secure a fair, competitive quote:
Arrange a professional survey first
A RICS Level 3 Building Survey will give you an independent assessment of the roof's condition, which you can share with roofers for accurate quoting without them inspecting in person.
Get at least three itemised quotes
Ask each roofer to break down material costs, labour, scaffolding, disposal, and any structural work separately so you can compare like-for-like.
Check credentials
Verify NFRC or FMB membership, public liability insurance (minimum £2m), and ask for references from recent local jobs.
Confirm the warranty
New tiles carry manufacturer guarantees of 10-30 years; workmanship warranties vary from 5-10 years. Get both in writing.
Time your project
Roofers are busiest in autumn following summer storms. Booking in late winter or early spring can sometimes negotiate a small saving.