🧮 Interactive Calculator · Updated July 2026 · Real UK Data

Roof Cost Calculator UK

Get a 2026 UK roof replacement cost estimate in 30 seconds. Pitched or flat, by material, roof size, scaffolding and region. Concrete tile, clay, natural slate, metal, EPDM, GRP — NFRC-approved supply-and-fit rates. No email required.

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Roof replacement costs in the UK (2026)Typical installed prices by option — 2026 — Source: BestBuilders.co.uk · typical UK prices 2026 · excludes VAT & access variances Roof replacement costs in the UK (2026) Typical installed prices by option — 2026 £0 £6k £12k £19k £25k Concrete tile (pitched) 80 m² roof £8k–£11.2k Clay tile (pitched) 80 m² roof £10.3k–£14.5k Natural slate (pitched) 80 m² roof £14.6k–£20.6k EPDM rubber (flat) 20 m² garage £1.7k–£2.3k Source: BestBuilders.co.uk · typical UK prices 2026 · excludes VAT & access variances BestBuilders.co.uk
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Estimate Your Roof Cost in 30 Seconds

4 steps. Covers strip-off, breathable membrane, battens, fascias, the new surface, labour, skip and VAT. Scaffolding is added separately where needed.

Methodology

How This Calculator Works

Our roof calculator combines material, roof area, scaffolding and region with real 2026 UK supply-and-fit pricing from NFRC-approved roofers across our 519-town database.

Material Rates (per m², fitted)

  • Concrete tiles — £120/m² (cheapest pitched)
  • Clay tiles — £155/m² · Synthetic slate — £150/m²
  • Natural slate — £220/m² (premium, 100+ yr)
  • Metal standing-seam — £180/m²
  • Felt £75 · EPDM £100 · GRP £115/m² (flat)

Includes strip-off, breathable membrane, battens, surface, labour, skip and VAT.

Scaffolding & Regional Multipliers

  • Scaffolding +£1,500 typical (£900–£2,500 by height/access)
  • London 1.27× · South East 1.13× · South West 1.04×
  • East of England 1.07× · Midlands 1.00× (baseline)
  • North West 0.94× · North / Yorkshire 0.93× · Wales 0.93×
  • Scotland 0.96× · NI 0.88×

Low/high band reflects a ±17% spread for access, pitch complexity and detailing. A real quote follows a survey.

Typical Roof Replacement Costs (2026)

Supply & fit incl. strip-off, membrane, battens, labour, skip & VAT, Midlands baseline (±17%). Scaffolding priced separately (+£1,500 typical).

Roof type / materialTypical sizeCost range
Concrete tile (pitched)80 m²£7,970–£11,230
Clay tile (pitched)80 m²£10,290–£14,510
Natural slate (pitched)80 m²£14,610–£20,590
EPDM rubber (flat, garage)20 m²£1,660–£2,340

These figures power the calculator above — enter your own spec for a tailored estimate. For the full breakdown, read our complete cost guide.

Roof Replacement Costs at a Glance: 2026 Visual Guide

Supply-and-Fit Cost per m² by Roofing Material

Material choice is the single biggest lever on a re-roofing quote. Concrete tile remains the workhorse of British housing at around £120/m² supply and fit, while natural slate — the longest-lasting covering at 100+ years — runs to roughly £220/m², nearly double. Flat-roof coverings price lower per square metre, and every rate below already includes strip-off, breathable membrane, battens, labour, skip and VAT.

Bar chart of 2026 UK roof cost per square metre supply and fit by material: concrete tile 120 pounds, synthetic slate 150, clay 155, metal 180, natural slate 220; flat roofs: felt 75, EPDM 100, GRP 115PITCHED ROOFSConcrete tilesMost popular£120/m²Synthetic slate£150/m²Clay tiles£155/m²Metal standing-seam£180/m²Natural slate£220/m²FLAT ROOFSFelt (3-layer)£75/m²EPDM rubber£100/m²GRP fibreglass£115/m²£0£50£100£150£200Supply & fit rate, £ per m² (2026, Midlands baseline, incl. VAT)
Typical 2026 UK supply-and-fit rates per m², Midlands baseline (±17% for access, pitch complexity and detailing). Source: BestBuilders 519-town cost database, NFRC-approved rates.

What a Re-Roof Actually Replaces: Pitched Roof Anatomy

A full re-roof strips the covering back to the rafters, then rebuilds the weatherproof sandwich: a breathable membrane draped over the timbers, treated battens fixed through it, and the tiles or slates hung on top, finished with a dry-fixed ridge — mortar bedding alone no longer complies with BS 5534. Fascias, soffits and gutter renewal are often priced as extras, so check your quote itemises them.

Labelled cross-section of a pitched roof showing rafters, breathable membrane, battens, tiles, dry-fix ridge, fascia board, soffit and gutter - the parts a UK re-roof quote coversLoft spaceRidge (dry-fix)Breathable membraneBattensTiles or slatesRaftersGutterSoffitFascia board
Cross-section of a typical UK pitched roof. The cutaway slope shows the layers renewed in a full strip-and-recover re-roof, from rafters out to the tiles.

Where the Money Goes on a 3-Bed Semi (80m²)

For a typical 80m² three-bed semi, the calculator’s £120/m² concrete-tile rate works out at £9,600, splitting roughly 45% materials, 40% labour and 15% prep (strip-off, membrane, battens and skip). Scaffolding is always its own line — typically £1,500, ranging £900–£2,500 with height and access — taking a realistic all-in figure to about £11,100. Clay and natural slate lift the materials block hardest.

Stacked bar chart: total 2026 re-roof cost for an 80 square metre 3-bed semi split into materials, labour, prep and scaffolding - concrete tile 11,100 pounds, clay 13,900, natural slate 19,1003-bed semi ≈ 80m² roof · Midlands baseline · includes VAT · scaffolding shown as its own blockConcrete tile£4,300£3,800£1,500£1,500£11,100Clay tile£6,100£4,400£1,900£1,500£13,900Natural slate£9,700£5,700£2,200£1,500£19,100Tiles & materialsLabourStrip-off, membrane, battens & skipScaffolding
Indicative cost build-up for an 80m² roof, Midlands baseline, including VAT. Totals match the calculator’s mid-point estimates (±17% band applies); scaffolding priced separately.

Frequently Asked Questions

How much does a new roof cost in 2026?

Re-roofing is priced per square metre: concrete tiles run about £100-£140/m² in 2026, clay £130-£180/m² and natural slate £180-£260/m². A typical 80m² concrete-tile pitched roof is around £9,000-£11,500 including scaffolding.

How much is a flat roof?

Flat-roof coverings are cheaper per m²: felt about £55-£95/m², EPDM rubber £80-£120/m² and GRP fibreglass £90-£140/m². A 20m² garage roof in EPDM is roughly £1,800-£2,600.

Is scaffolding included?

Scaffolding is priced separately and typically adds £900-£2,500 depending on roof height and access. The calculator lets you add it on; it is required for almost all pitched-roof work above 2m.

Do I need Building Regulations for a new roof?

Re-roofing more than 25% of a roof slope triggers Part L, which usually means upgrading the roof insulation. Like-for-like repairs to a small area generally do not need approval.

How do I choose a roofer?

Look for NFRC (National Federation of Roofing Contractors) membership, get at least three quotes and check for a written workmanship warranty, typically 10 years. The estimate here covers strip-off, membrane, battens, surface, labour, skip and VAT.

How accurate is this roof cost calculator?

It gives a realistic guide range based on typical UK 2026 rates for your roof type, size and pitch, not a fixed quote. Actual prices depend on your roof's condition, chimney and valley details, felt and batten replacement, and access. A roofer's survey can move the figure up or down, so treat the estimate as a budgeting starting point.

What does the estimate include and exclude?

The figure covers stripping the old covering, new felt, battens, tiles or slates, ridge and labour. It usually excludes structural timber repairs, new fascias and soffits, gutter renewal, chimney work, VAT variations and building control fees. Hidden rot or deck damage found once the roof is stripped is priced separately, which is why survey quotes can differ.

Why is my real roofing quote higher than the calculator in London?

The tool uses national average rates. London and the South East carry higher labour costs, congestion and parking charges, plus tighter access on terraced streets that needs more scaffolding time. Steep, cut or listed roofs and slate rather than concrete tile also lift the price. Always compare two or three local quotes against the guide figure.
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Reviewed by the BestBuilders editorial team on 23 July 2026 · Next scheduled review: October 2026 · See our editorial standards.