Key Takeaways
- National cost guides put the UK average for a new roof at around £13,000, but that figure covers every house type and region, so treat it as a sense check rather than a quote.
- Terraced houses tend to cost less than semis, and detached houses more.
- Size, covering material, scaffolding, chimneys, leadwork and the condition of the timbers underneath make the biggest difference to price.
- A good quote spells out exactly what is included: strip, membrane, battens, tiles or slates, ridge and verge, leadwork, scaffolding, waste and any Building Regulations sign-off.
- Not every tired roof needs replacing. A survey should tell you honestly whether a repair will do the job.
Why There Is No Single Price for a New Roof
Two houses on the same street can need very different roofs. One might have a simple gable roof with a single chimney; the next might have a hipped roof, a dormer, a bay and two stacks. The amount of roof, the shape of it and how easy it is to reach all change the labour involved, and labour is a large part of the bill.
That is why we always survey a roof before giving a price, and why online calculators can only ever give you a rough idea.
What National Cost Guides Say
Checkatrade’s national cost guide puts the average new roof in the UK at around £13,000, with roofing labour averaging about £130 per square metre (figures last updated June 2026). National averages include London and the South East, where prices are higher, so they are a useful sense check rather than a local price.
As a rule, a mid-terrace with a simple pitched roof sits at the lower end, a semi-detached house with a pitched or hipped roof in the middle, and a larger detached house with dormers or a complicated roof towards the top. Re-slating in natural slate costs more than re-tiling in concrete. Chimney rebuilds, new fascias and soffits, structural timber repairs and roof windows are usually priced on top.
What Affects the Cost of a New Roof
Size and shape
Bigger roofs need more materials and more time. Hipped roofs, valleys, dormers and bays all add cutting and detailing, so a complicated roof costs more than a simple gable of the same area.
The covering you choose
Concrete interlocking tiles are the most common and usually the most affordable option on North East homes. Clay tiles cost more. Natural slate costs more again and takes longer to fit, but lasts far longer when it is laid properly. If your house already has slate, our slate roofing page explains when existing slates can be reused and when they cannot.
Scaffolding and access
Almost every re-roof needs full scaffolding. Terraces with narrow back lanes, houses on slopes and properties where scaffolding has to go over a conservatory or neighbouring land take more planning and can cost more.
Chimneys and leadwork
Chimney stacks often need repointing, new flashings or a rebuild once the roof is stripped around them. New lead flashing to stacks, abutments and valleys is a significant part of the cost on older houses, and it is one of the most common places for cheap jobs to cut corners.
What is under the tiles
Rafters, purlins and the roof deck cannot be fully inspected until the old covering comes off. Most roofs only need new membrane and battens, but rotten timbers, previous bodged repairs or spray foam insulation can add work. A good roofer will tell you before the job how these situations are handled and priced, so there are no surprises halfway through.
Ventilation, insulation and Building Regulations
Replacing a roof covering is normally building work under the Building Regulations. The Planning Portal advises that in most situations re-roofing needs Building Regulations approval, which can include improving loft insulation and ventilation. Ask whether this is included in your quote and how it will be signed off.
What a Proper Roof Replacement Quote Should Include
When you compare quotes, make sure each one covers the same work. A clear quote should list:
- Scaffolding, including how long it is up for
- Stripping and disposing of the old covering, membrane and battens
- New breathable membrane and treated battens
- The exact tile or slate being used, by name
- Ridge and hip details (mortar or dry fix)
- Verges, valleys and any leadwork
- Chimney work, if needed
- Fascias, soffits and guttering, if included
- How Building Regulations will be handled
- What guarantee is provided and who stands behind it
If one quote is much cheaper than the others, it is usually because something on that list is missing.
Repair or Replace?
A leaking or tired roof does not automatically need replacing. Slipped tiles, a failed valley, cracked ridge mortar or worn flashing can often be repaired for a fraction of the cost of a new roof. Replacement starts to make sense when problems are spread across the roof rather than in one place, when the membrane underneath has failed, or when you are paying for repairs year after year.
Our guide to the signs your roof needs replacing explains what to look for from the ground and in the loft. If it turns out a repair is all you need, our roof repairs team can help.
A Recent Roof Replacement in Sunderland
On a semi-detached house in Silksworth, the old roof was worn out across the whole surface rather than failing in one spot. It was stripped back to the rafters, given a new breathable membrane and treated battens, and re-covered in plain tiles with a dry verge system. While the scaffolding was up, the chimney was repointed and new guttering fitted, which is a good example of why quotes for the same house can differ: it depends what is sensible to do at the same time. You can see the full project, with photographs, in our Silksworth roof replacement case study.
Spreading the Cost
If paying for a new roof in one go is difficult, we offer finance options on roofing work, subject to status, so you can spread the cost.
Frequently Asked Questions
Can a roof be replaced in winter?
Yes. Roofs are replaced all year round. Progress depends on the weather, but the roof is kept watertight at the end of each day.
Is a new roof cheaper if you reuse the old tiles?
Sometimes, but rarely by much. Older concrete tiles are often brittle, and mixing old and new tiles can cause problems. Natural slate is different: sound slates can often be reused, which is something we assess on survey.
Do I need planning permission for a new roof?
Like-for-like re-roofing does not normally need planning permission. Listed buildings, conservation areas and changes to the roof’s shape or materials can be different, so check with Sunderland City Council if any of these apply. Building Regulations are a separate matter, covered above.
Do you replace flat roofs as well?
Yes. Flat roofs are usually priced differently, as the covering, decking and size vary much more. See our flat roofing page for more on felt, EPDM rubber and fibreglass options.
Which areas do you cover?
We work across Sunderland and the wider North East. See areas we cover for details.
Get an Accurate Price for Your Roof
The only way to get a reliable price is for someone to look at your roof properly. Request a free roof survey and we will explain what your roof needs, what it does not, and give you a clear written quote. Find out more about our roof replacement service.