Cost of a New Roof
A new roof in the UK typically costs £5,000–£15,000 depending on roof size, pitch, and material. A standard 3-bedroom semi-detached house with concrete tiles usually falls between £6,000 and £9,000 fully installed by a qualified roofer.
What Affects the Cost
Roof size and pitch: The larger and steeper the roof, the more materials and labour are needed. A steeply pitched roof requires more scaffolding time and takes longer to complete safely, pushing costs up considerably. Most roofers price per square metre of roof area.
Roofing material: Concrete interlocking tiles are the most affordable option. Natural slate costs roughly twice as much per square metre but lasts significantly longer. Clay tiles sit in between. If you are unsure what suits your home, the Roof Tile Types Guide UK covers the options in detail.
Stripping the old roof: Most contractors will strip existing tiles before re-roofing. Disposal of the old materials adds to cost, as does replacing the underlay and any damaged battens discovered once the roof is stripped.
Structural condition: Rotted or sagging timbers need replacing before new tiles go on. A basic survey by the roofer before they quote will flag this, but it can add £500–£2,000 to the final bill depending on the extent of the damage.
Scaffolding: A full scaffold erection and hire for a typical semi-detached property costs £800–£1,500 and is usually included in the quote, but always confirm this. Longer hire periods increase cost if the job overruns.
Additional work: Chimneys, skylights, and flat roof sections all require flashing, which adds labour and materials. If your chimney needs attention at the same time, see our guide to repointing a chimney for what to expect.
UK Average Cost Breakdown
| Task | DIY Cost | Trade Cost | Notes |
|---|---|---|---|
| Strip existing roof covering | N/A | £400–£900 | Includes skip hire; not safe or practical for DIY |
| New underlay and battens | £300–£600 | £600–£1,200 | Materials only for DIY; trade includes fixing labour |
| Concrete interlocking tiles (materials) | £800–£2,000 | £800–£2,000 | Materials cost is the same; trade buys at slight discount |
| Natural slate tiles (materials) | £1,800–£5,000 | £1,800–£5,000 | Welsh slate at premium end; reclaimed slate cheaper but variable |
| Labour — full re-roof (semi-detached) | N/A | £2,500–£5,000 | 2–5 days for a typical 2-person crew |
| Scaffolding (erect, hire, strike) | N/A | £800–£1,500 | Often included in total quote; confirm before signing |
| Ridge tiles and re-ridging | £150–£400 | £400–£900 | Dry-fix ridge is now standard; see our re-ridge guide |
| Lead flashing around chimney/skylights | £100–£300 | £350–£800 | Per feature; lead theft is common so some opt for alternative materials |
| Full re-roof — detached house | N/A | £9,000–£15,000+ | Larger footprint, more tiles, more scaffold; slate adds further cost |
DIY vs Tradesman — Is It Worth It?
A full roof replacement is one of the most dangerous DIY projects a homeowner can attempt. Working at height on a pitched roof without professional training and fall-arrest equipment creates serious risk of fatal injury. The Health and Safety Executive (HSE) consistently identifies falls from height as the leading cause of fatal workplace accidents in construction — and the same risks apply to untrained homeowners. For this reason, a complete roof replacement is not realistically a DIY job for the vast majority of people.
That said, there are tasks adjacent to a new roof that confident DIYers can handle legally and safely: replacing individual broken tiles, clearing gutters, or sealing flashing on a single-storey section with a proper ladder and stabiliser. Our Roofing Guide explains which tasks are genuinely DIY-viable and which require a professional.
If you do hire a trade, using a registered roofer who carries public liability insurance and offers a written guarantee is essential. Savings from cutting corners here rarely outweigh the cost of rectifying poor workmanship. For larger roof projects, seek at least three quotes to establish a fair market rate for your area and property type.
Regional Price Variations
Labour costs vary significantly across the UK. In London and the South East, roofer day rates tend to be 20–40% higher than the national average, meaning a job priced at £7,000 in the Midlands or North could cost £9,000–£10,000 for the same specification in London. Scaffolding hire also tends to be more expensive in urban areas where access is more complex. Scotland and Wales broadly align with the Midlands on pricing, though rural areas may carry a call-out premium if specialist tradespeople need to travel. Always get quotes from local firms — national directories sometimes connect you with traders who sub-contract, adding a margin without adding value.
How to Get the Best Price
- Get three written quotes minimum. Verbal estimates are not comparable and give you no protection. Ask each contractor to quote against the same specification so you are comparing like for like.
- Avoid booking in summer peak season if possible. Roofers are busiest April–September. Booking work for autumn or winter often means shorter wait times and occasionally lower rates, though confirm the contractor is comfortable working in colder conditions.
- Ask about scaffold sharing. If a neighbour also needs roof work, sharing the cost of scaffold erection and hire can save both parties several hundred pounds.
- Check for VAT. A reputable roofer whose turnover exceeds the VAT threshold must be VAT-registered. If a quote is suspiciously low and VAT is not mentioned, ask directly — unregistered traders are often uninsured too.
- Verify credentials before paying any deposit. Check membership of a recognised trade body and confirm public liability insurance is in place. Checkatrade and the National Federation of Roofing Contractors (NFRC) both provide contractor vetting.
What a Good Quote Should Include
- Full scope of works in writing — which tiles, underlay specification, batten size, ridge type, and whether stripping the old roof is included.
- Scaffolding arrangements — whether erection, hire period, and striking are included in the price, and what happens if the job overruns the hire period.
- Waste disposal — confirmation that old tiles and materials will be removed from site, and how (skip, grab lorry, or van loads).
- Written guarantee — minimum of 10 years on workmanship is standard from reputable contractors; check whether the guarantee transfers if you sell the property.
- Payment schedule — a reasonable deposit of no more than 25–30% upfront, with staged payments and a retention held until the job is signed off.
Hidden Costs to Watch For
- Rotten roof timbers: Once tiles are stripped, damaged rafters or wall plates are exposed. Replacement timber adds both materials and labour costs that are impossible to quote for in advance. Ask your roofer how they handle this and whether they will notify you with a revised cost before proceeding.
- Fascia, soffit, and gutter replacement: A new roof often highlights ageing fascia boards and gutters. Roofers may flag these separately; bundling the work while the scaffold is already up is usually cheaper than returning later. See our guide on how to replace fascia and soffit boards for what is involved.
- Planning permission or listed building consent: Changing roof materials on a listed building or in a conservation area requires consent from your local planning authority. Using the wrong tiles can result in an enforcement notice. Check with your council before work starts — gov.uk has guidance on permitted development rights for roof alterations.
- Scaffold overrun charges: If bad weather or hidden structural problems extend the job, scaffold hire charges accrue daily or weekly. Clarify the daily rate and responsibility for overrun costs before you sign the contract.
Frequently Asked Questions
How much does a new roof cost for a 3-bedroom semi-detached house in the UK?
A full re-roof on a typical 3-bedroom semi-detached house costs between £6,000 and £9,000 with concrete interlocking tiles, including labour, scaffolding, and waste disposal. Natural slate will push this to £9,000–£13,000 for the same property.
Do I need planning permission to replace my roof?
In most cases, replacing like-for-like roof materials is permitted development and does not require planning permission. However, changing materials on a listed building or in a conservation area requires consent — always check with your local planning authority before work begins.
How long does a new roof last?
Concrete interlocking tiles typically last 40–60 years. Natural slate can last 80–150 years or more if installed correctly. The underlay and battens generally need replacing every 30–40 years regardless of tile type.
Can I claim VAT relief on a new roof?
Roofing work on existing residential properties is standard-rated at 20% VAT. However, if your property has been empty for two or more years, a reduced rate of 5% VAT may apply — HMRC’s VAT Notice 708 covers the eligibility criteria in detail.
How do I know if I need a full new roof or just repairs?
If fewer than 20–25% of tiles are damaged, slipped, or broken, targeted repairs are usually more cost-effective than a full replacement. Signs that a full re-roof is needed include widespread cracked or missing tiles, a sagging roof deck, persistent leaks after repairs, or underlay that is over 30 years old.
Ask your roofer to photograph the roof deck, wall plates, and any exposed timbers before new underlay goes down — this gives you a dated record of the structural condition and is invaluable if a warranty dispute arises later. Reputable contractors will do this as standard; if one refuses, treat it as a red flag.
Sources
- Which? — New roof cost guide — which.co.uk
- HSE — Falls from height: Key statistics and guidance — hse.gov.uk
- NFRC — Find a roofing contractor and guidance for homeowners — nfrc.co.uk
This guide is for general information only. Always work safely and follow manufacturer instructions. DIYnut accepts no liability for injury or damage arising from DIY work.
