If you are doing research for your roof replacement and want to find out the exact costs then you might have faced the same problem as everyone else. The “average cost” of replacement you find online varies greatly depending on the source and it can be anywhere between £4,000 and £19,000+. This is actually not bad research but just a true reflection of how big of a difference is there between two roof replacement jobs. This guide explains everything about the cost of replacing a roof so you will have a ballpark figure of where your own project might land before you get real quotes.
Figures on this page are based on current UK roofing industry prices and checked against a number of government and trade sources. Last updated July 2026.
Full roof replacement on an average UK home costs around £8,000 and the prices can range between £4,000 to £19,000. For example , the average cost for a semi-detached home is between £5,500 and £9,000 and for a larger detached home with more complex or steep roof design and premium materials such as natural slate can take the total well past £15,000 and sometimes up to £19,000 or more.
A roof replacement quote is not just a simple number as there are a bunch of different costs thrown together to get the final price. Here is what makes up that total.
Size of roof
Most quotes are per square metre so the bigger the roof the bigger the bill. A small terraced house might have a roof area between 40 and 60m², a typical semi-detached 60 and 90m² and a larger detached home 90 and 150m² or more. So obviously, more roof area will translate to more costs.
Material Choice
This is usually the biggest factor that decides the final cost. Following are the rough supply and installation figures based on approximate per square metre:
- Concrete tiles: £50-£110/m². The most common & most budget friendly option, typically lasts 25 years to 50 years.
- Clay tiles: About £70-£160/m². It is more expensive than concrete but tends to last longer and is popular for its appearance, particularly on period properties.
- Natural slate: About £80-£200 per square metre. This is a premium choice for longevity and a traditional look especially on listed or conservation area properties.
- Flat roofing (EPDM rubber or modern felt systems): £45-£100 per square metre. Usually seen on extensions, garages and dormer roofs and with a shorter life expectancy than pitched materials (usually between 15 and 30 years depending on the system).
Labour
A roofing team usually consists of 2 to 4 people and labour is usually a substantial portion of the total cost depending on the complexity. Also the daily rates for labour vary by area so if you are in London or the South East then you will have to pay more.
Scaffolding
It is needed on almost every replacement pitched roof on a two-storey house. Expect to pay between £600 and £1,500 but single-storey bungalows and some garage roofs may not need this work at all.
Stripping and waste disposal
In the quoted headline price, the stripping and disposal of the old roof covering is not always included. It is often quoted as an additional cost on top so always make sure that a quote includes it.
Complexity of Roof
Chimneys, dormers, valleys, multiple roof faces and steep pitches all require additional time and cost. A simple single-pitch roof is a much easier job than a period property with lots of roof intersections.
Structural repair
If any damage is found to the timber decking, battens or rafters underneath the old covering once it is stripped back, repairs are added to the job. This is one of the more common reasons that the final bill ends up being higher than the original estimate. The condition of the structure is often impossible to determine until the roof is opened up.
Region
As mentioned earlier, labour costs in London and the South East are always above the national average. The countryside, the Midlands, the North of England, Scotland and Wales are likely to be below the national average.
On paper, many roof replacement quotes seem simple but in practice there are many things that are routinely missed, not properly mentioned or added later, and it is better to understand them before you compare quotes or agree to anything.
Waste removal isn't always included
Some quotes will include the stripping and disposal of your old roof in the headline price and others will treat it as a separate line item added afterwards. You should always ask if this cost is included, otherwise you could be comparing a full price with a partial price.
Surprises in structure
Sometimes roofers don’t know what condition the timber underneath your existing covering is in until they strip it back. A quote given before any covering is removed is necessarily based on what can be seen. You should expect a revised cost in case there is any rot or damage to the roof structure underneath. Ask a roofer ahead of time how they deal with this and if they will call you before doing any additional work.
VAT
20% VAT is included in most quotes but not all make this clear at the beginning. One quote might be £1,000 cheaper than another but that could be simply because it doesn’t include VAT and isn’t a better deal. Always confirm about VAT explicitly.
Insulation upgrades
In the UK Building Regulations, normally if more than 25% of the existing roof covering is being replaced then the roof insulation has to be upgraded to current standards. This is not optional, and it is not always included in the initial ballpark price. It’s a sensible long-term move for energy bills but an upfront cost worth budgeting for.
Planning permission
Most like-for-like roof replacements do not need planning permission. The main exception is listed buildings. Re-roofing a listed building will almost certainly require Listed Building Consent. Changes to insulation and construction can affect the character of the building even if the work appears to be a simple repair. You will not usually need planning permission for the roof structure work itself in conservation areas but some councils remove this right with an Article 4 direction, so it’s always worth checking with your local authority before you start.
All price figures on our website are real and honest estimates based on current 2026 UK market rates but these are just estimates. Two roofs of the same size can still have a huge difference in cost when you consider access, structural condition and material choice. The only way to know what your particular roof is going to cost you is to have it properly assessed.
That’s where our platform comes in. Read our cost guide thoroughly, get an estimate using our real-time calculator and then get a quote from local roofers to get an exact cost.