Garage Roof Replacement Cost

How Much is a New Garage Roof?

In 2025, the average garage roof replacement costs between £750 and £3,500.

The size of your garage is the first thing that can narrow down how much you should expect to pay for a new garage roof:

• A single garage roof replacement costs between £750 and £2,000.
• A double garage roof replacement costs between £1,000 and £3,500.

You'll find that a flat roof replacement will sit at the lower to middle end of this range, while pitched roofs are typically at the top end.

The final factor that impacts garage roof replacement costs is the material you choose.

For flat garage roofs:

• Felt — By far, this remains the most common choice. Material costs are £50 to £80 per m².
• Rubber (EPDM) — Growing in popularity, as it's more durable than felt flat roofs. Material costs are £80 to £120 per m².

For pitched garage roofs:

• Tile or Slate — The more common option if the garage already has a pitched roof and you want to match the aesthetic of the house. Material costs are £70 to £120 per m².
• Metal Sheets — A durable and lower cost option that's often used for detached garages. Material costs are £40 to £90 per m².

With all this in mind, let's take a look at some garage roof replacement cost examples below.

Replacement Garage Roof Prices

Single Garage Roof Replacement

Double Garage Roof Replacement

Calculate Garage Roof Replacement Costs

Want a clearer idea of what it'll cost to replace your garage roof?

Head over to our main roof replacement cost guide.

In that guide, you'll find our roof replacement cost calculator. This gives you a quick and easy way to estimate what you should expect to pay in your circumstances.

Key Things to Consider Before Replacing a Garage Roof

• What is the garage used for? If the garage is just used for parking and storage, then you'll be able to get away with using cheaper materials. But if it's used as a workspace, or it's connected to your home, then roofers typically recommend higher quality materials (for durability and insulation).
• Can the roofer self-certify their work? Full garage roof replacements require building control approval. Only roofers who are members of the NFRC Competent Person Scheme can self-certify their work and handle all the paperwork.
• Do you think your garage roof contains asbestos? Many older garages that were built or altered before 2000 may have asbestos roofing. If you suspect this, mention it when getting quotes. Most roofers can advise if they think asbestos is present, but only a licensed specialist can test and confirm it.
• What condition are the gutters in? Any overflow from your existing garage roof guttering could cause leaks, damp, or structural problems. When getting quotes, ask whether they recommend replacing, repairing, or cleaning the guttering at the same time.
• Could there be hidden problems? Until the old garage roofing is stripped away, you won't know for sure that the underlying structure is sound. It's sensible to set aside an extra 10% to 15% in case a problem is uncovered once work has started.

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Choosing a Garage Roof Material

The material you choose for your new garage roof will determine how long it lasts, what amount of maintenance is required, and the cost.

Let's take a look at the pros and cons of the most commonly used garage roof materials in the UK.

Felt Garage Roof Cost

• Best for: Budget flat garage roofs.
• Material cost: £50 to £80 per m²

Felt remains the most popular choice for new garage roofs in the UK. It's affordable, takes less time to install, and is easy to repair. However, it's not as durable as alternatives, so it won't last for as many years.

Pros

• ✔ Most affordable option.
• ✔ Quick and simple to install.
• ✔ Maintenance is easy.

Cons

• ✖ Shorter lifespan than alternative materials.
• ✖ Tends to require more frequent repairs.
• ✖ Not the most aesthetically pleasing option.

Rubber (EPDM) Garage Roof Cost

• Best for: Higher-end flat garage roofs.
• Material cost: £80 to £120 per m²

Rubber roofing is more expensive than felt, but it'll last longer and tends to need less maintenance. In the UK, more and more homeowners are opting to use rubber when they're replacing flat garage roofs.

Pros

• ✔ Last longer than felt.
• ✔ Minimal upkeep compared to felt.
• ✔ Quick and easy to install.

Cons

• ✖ More expensive than felt.
• ✖ Colour fades over time.
• ✖ Repairs will be more noticeable.

Tile or Slate Garage Roof Cost

• Best for: Matching-up style of your home.
• Material cost: £70 to £120 per m²

Costs for tile or slate garage roof replacements are higher than other pitched roof material options. However, it'll last for decades if correctly installed, improves your home's kerb appeal, and provides better insulation than other alternatives.

Pros

• ✔ Long-lasting (50+ years).
• ✔ Durable and weather-resistant.
• ✔ Better insulation than alternative.

Cons

• ✖ Most expensive pitched roof option.
• ✖ Takes longer to install.
• ✖ Heavy, so structural reinforcement may be required.

Corrugated Metal Garage Roof Cost

• Best for: Budget pitched garage roof.
• Material cost: £40 to £90 per m²

Corrugated metal sheets are a lightweight and durable pitched garage roof material option. Although they're not an attractive-looking choice, they're ideal for homeowners who have a pitched roof on a detached garage and want to keep costs as low as possible.

Pros

• ✔ Most affordable pitched roof option.
• ✔ Lightweight and easy to install.
• ✔ Durable.

Cons

• ✖ Functional appearance won't suit all homeowners.
• ✖ Noisy during rain or bad weather.
• ✖ Little insulation compared to tiles or slate.

Building Regulations & Planning Permission for Garage Roofs

If you're completely replacing your garage roof, there are some key building regulations and planning permission rules to be aware of.

Here are the main points:

• Full garage roof replacements require building control approval.
• Only roofers that are members of the NFRC Competent Person Scheme can self-certify that their work is compliant with UK Building Regulations.
• If your roofer isn't a scheme member, then you're responsible for coordinating with your local authority and getting the work signed off.
• Like-for-like garage roof replacements don't typically require planning permission (falls under permitted development in most cases).
• Planning permission may be required if you're changing the roof type (i.e., from flat to pitched) or increasing the roof height.

If you're not sure, the best thing to do is to connect with a local roofer. They'll be able to advise you based on what you're looking to do.

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Signs That You May Need to Replace a Garage Roof

Garage roofs can last for many years (decades!) when correctly installed. But it's normal, especially with exposure to the unforgiving UK weather, to wear down and become less effective over time.

Here are some of the most common signs that a garage roof needs replacing:

• Leaks — If water is getting inside your garage, this is the most obvious sign that a repair or replacement is needed.
• Damp — Damp patches, mould, or a 'musty' smell inside of a garage is a sign that there's either poor ventilation or damage that hasn't been fixed. This is a more urgent issue if it's an attached garage.
• Pooling Water — Flat roofs are installed with a slight slope so that water flows off into the guttering. If you notice that water is pooling on it, then something is wrong with the underlying structure.
• Sagging Roof — If you can spot visible sagging from the outside, it's a sign that the underlying structure that holds the roof up has weakened. This is easier to catch on a flat roof, but you can spot it on a pitched roof by looking for uneven slopes or any dips along the ridge line.
• Surface Damage — Cracks, blisters, or tears can let the water slowly seep in. This can eventually lead to more serious structural problems if it's not addressed early.

Not sure what you need to do?

Use MyJobQuote to find a local roofer. They'll assess the current condition of your garage roof and tell you if it's time to invest in a new one.

What's Involved in Replacing a Garage Roof?

Replacing a garage roof isn't something you should attempt yourself. It's not only dangerous (as it requires working at height), but is also very physically demanding work.

Because this isn't a DIY-friendly job, the vast majority of homeowners choose to find and hire a local roofer.

And remember: it's perfectly normal (and widely recommended) to get quotes from multiple roofers. With MyJobQuote, you can get quotes from roofers near you which are fast, free, with no-obligation to go ahead.

Let's take a broad look at the process when getting a garage roof replaced by specialists:

Before the Job Starts

• Initial Roof Inspection — The roofer should assess your garage roof by getting onto the roof (if safe), walking around the outside, and checking inside. Hidden problems can be subtle, but experienced roofers know what to look for.
• Measuring the Area — To give you the most accurate quote, they'll measure up the garage roof to calculate material requirements and estimate how long the job should take.

During the Job

• Removing the Old Roof — The existing roof covering will be stripped away and then disposed of. In most cases, this won't take more than half a day (the main exception being if asbestos is present).
• Installing the New Roof — Structural problems are fixed and then the new garage roof will be installed. Flat garage roof replacements (felt or rubber) typically take 1 to 2 days, while a pitched roof could take up to 3 days to fit.

After the Job

• Final Checks — Once the new garage roof has been installed, the roofers will check over everything to ensure that no water is making its way through.
• Certification — If they're able to self-certify their own work, then you should get a Building Regulations Compliance Certificate within a few days. If they can't self-certify, then sign-off will be required from your local building authority.

Checklist: Hiring a Roofer to Replace Your Garage Roof

Consider these key points before hiring a roofer for this job:

• Are they part of the NFRC Competent Person Scheme? Only roofers that are registered with this scheme can self-certify their work and provide you with a Building Regulations Compliance Certificate.
• Will they handle building control sign-off? If they can't self-certify, ask if they'll coordinate with your local authority so you can get a Building Regulations Compliance Certificate.
• Do they have public liability insurance? This isn't a legal requirement, but it's something you want a roofer to have in case something goes wrong when they're installing a new garage roof.
• Is waste removal included? Roofers normally handle this on behalf of homeowners. However, it's a sensible move to confirm with them that roof removal and disposal of all waste generated is included in the total cost quoted.
• How much garage roof experience do they have? You're ideally looking for someone who has around 2 years of experience with the type of roof you're getting (flat or pitched).
• Do they have examples of similar work? Look for before and after photos on their MyJobQuote profile so you can get an idea of what to expect.
• Do they have positive reviews? Check the feedback that they've received from other homeowners on MyJobQuote who've hired them.

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