Roof Lantern Cost

Looking to find out how much installing a roof lantern costs?

Our detailed cost guide includes supply-only costs for different types of roof lanterns, the cost of roof lantern installation, as well as additional costs — all refreshed in this 2025 update

To give you a quick idea of what to expect, average roof lantern prices quoted in the UK typically fall around £2,250.

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How Much Does Roof Lantern Installation Cost?

The cost to install a roof lantern varies widely. The biggest factors that determine the price are the size of the roof lantern and the material it is made from.

You can get a small roof lantern made from uPVC fitted for between £1,000 to £1,700.

The most common choice of material is aluminium. This is because it is not the most expensive option, but it does provide good quality and can be made using thinner struts to support the glass.

A small aluminium roof lantern will cost £1,280 to £1,650. A mid-sized aluminium roof lantern will cost £1,880 to £2,300.

The most expensive options are timber-framed roof lanterns. They all have to be custom-made, which is why the cost is much higher. A small timber-framed roof lantern will cost £2,400 to £3,500.

Roof Lantern Installation Prices

The cost will depend a lot on the specific size and type of roof lantern you choose.

This table will give you some example prices for supply and installation of some common roof lantern choices.

Supply Cost of Roof Lanterns

The cost of buying your roof lantern will depend on the type you choose to get. To give you an idea of the price differences, you can see costs based on shape and frame material.

Shape of Lantern

For comparison, these are the prices for aluminium-framed roof lanterns.

Material of Lantern

Additional Roof Lantern Costs

When you work out your budget, you should ensure you add in any extra costs that might not be included in the quote.

You should also consider getting some other jobs done at the same time to save money and make the most of any scaffolding you might need to put up.

Adding Automatic Openers Cost

If you have windows that can open as part of your roof lantern, it can be worth investing in automatic openers. These allow you to open the windows without climbing up or using a stick.

The average cost to install automatic openers is £265 to £320 per window.

Adding Trickle Vents Cost

To comply with building regulations, you must have adequate ventilation in the room with your roof lantern. One of the ways that you might make this happen is by adding trickle vents to your roof lantern.

The average cost for this is £40 per vent.

Replace a Flat Roof Cost

If installing your roof lantern makes it clear that the flat roof it is going on is damaged or in bad repair, it might be a good idea to get it replaced at the same time.

You don’t want to install a roof lantern, then have issues with the roof surrounding it a few years later.

The average cost to replace a flat roof is £1,050.

Scaffolding Hire Cost

You may need to arrange scaffolding hire for your contractor to work on your roof.

It will depend on the type of roof they are working on and the location of the roof lantern. If you will need scaffolding, it is better to know sooner. Talk to your contractor early to determine if it needs to be arranged.

As scaffolding hire is usually for a fixed amount of time, you can often get other jobs done that need scaffolding at the same time. This is an excellent way to save money in the long run.

The average cost of scaffolding hire is £4,750.

Install Solar Roof Tiles Cost

Solar roof tiles are a great way to add solar power to your home. The biggest expense in the installation typically comes from the scaffolding hire.

Combining the work with another job requiring scaffolding can save money overall. The average cost of solar roof tiles is £12,000.

However, this can be much lower if you don’t need additional scaffolding hire.

Pressure Wash Your Roof Cost

Roof cleaning has a significant impact on the appearance of your home. It can remove dirt and moss that builds up over time. It’s a good job to get done if you want to renew the exterior of your home.

The average cost to pressure wash your roof is £470.

Replacing Missing Tiles Cost

Replacing roof tiles is an excellent job to get done if you already have scaffolding up. Missing roof tiles can let water in, leading to roof damage.

If you're aware of any missing tiles, it’s a good idea to fix the problem immediately.

The average cost to replace roof tiles is £200.

Replace Guttering Cost

Guttering can be easy to ignore, but it serves an important purpose. If your guttering has been neglected for a long time, it is a good idea to take advantage of any scaffolding to check it out.

Gutter replacement costs, on average, £675.

Labour Cost to Install Roof Lantern

The labour costs will vary depending on the type of fitters you hire. It will also depend on the size of your window.

If you have a very large window, a bigger team will be needed to install it safely. This will increase your daily costs, but won’t make the job go much faster.

For a mid-sized roof lantern, a team of two should be sufficient. In this case, you can expect to pay around £325 per day.

The whole process should take 2 to 3 days. This means your total labour costs will be in the range of £650 to £975.

What is a Roof Lantern?

Roof lanterns, sometimes referred to as skylights, are glass-covered openings in the roof.

They are great for letting natural light into a space. They are often seen as being very appealing to homeowners and can increase the value of a property.

Roof lanterns come in a variety of different shapes and styles, and they can often be fitted to any shape or size of the roof.

You can have a glass that lies flat to the roofline, like a Velux window, or you can have something that stands above the roofline. They can be fitted to both flat and pitched roofs.

Roof lanterns date back to the Victorian era, and the more traditional styles of roof lanterns seen today are often Victorian in appearance, which tend to be more architectural in their look.

These lanterns will have height and be made from several panes of glass, while modern designs tend to be sleeker in appearance, with a subtle profile.

If you have a structured roof lantern, you will be able to see the glazing bars. These are the pieces of wood or metal that support the glass. They are designed to be beautiful, as well as functional.

What Factors Impact Roof Lantern Installation Costs?

Roof lantern prices vary depending on a few factors:

Size Of Roof Lantern

The size you choose will be the biggest factor in your lantern roof cost.

Put simply, the larger the roof lantern, the higher the supply and labour costs. There is a big difference in price from a small roof lantern to a big one.

Type of Roof Lantern

The shape of the roof lantern will also impact the cost. The more complicated the shape, the higher the price.

However, this effect is relatively small compared to the size of the roof lantern.

The bigger price change comes from the material you choose for the frame. uPVC is the cheapest option, aluminium is the middling option, while the most expensive by far is timber.

Type of Glass

The glass you choose for your window can also affect the cost. There are quite a few options to choose from, but they will mostly depend on which brand of roof lantern you decide to use.

Let's take a look at a few of the options.

Glazing Type

If you choose double or triple-glazed glass, this will cost around 2 to 3 times the cost of single-glazed glass.

Tinted Glass

You can get clear or tinted glass for your roof lanterns. Some manufacturers charge the same for both types, while others charge a small extra fee for the tinted options.

Toughened Glass

If trees overhang your roof lantern, or you have windows above, you may want to pay extra for toughened glass. These panes are more resistant to damage.

Self-Cleaning Glass

You can get glass that encourages the water to run off in sheets rather than collect in droplets, which helps to clean the glass, and reduces the maintenance needed. This option will, however, attract a higher supply cost.

Low U-Value Glass

The U-value is a measure of how efficient your roof lantern is at trapping heat in your home.

The lower the U-value, the more effective, and the warmer your home will be. There will be a slight increase in the price of more efficient glass.

Scaffolding Hire

If the workers need to use scaffolding to access your roof, then you will need to pay extra. Scaffolding hire can be costly, so you should talk to an installer to know if you need to include this in your budget.

Location Of The Property

If your property is hard to access, or it is not easy to get material to the location of the roof lantern, the job will take longer. This will have an impact on your labour costs.

You should also expect to pay a premium for labour if you live in London or the south east of the UK.

What's Involved in Installing Roof Lantern?

• The first step is to make a hole in your roof for the lantern. This is a messy job, and you may want to seal off the room below the work to keep as much dust contained as possible.
• Once the hole has been made, you'll need to reinforce the roof - especially if the rafters or joists had to be cut to make the hole. This is usually done by replacing the removed timber with two new pieces, spanning either side of the opening.
• An upstand will then be built, which is the raised ledge on which the roof lantern’s frame will sit, made from materials that match your roof.
• The frame for the roof lantern will be constructed and sealed into place on the upstand, using silicone. This creates a weathertight finish and a solid base to support the panes of glass.
• The struts that support the glass are then constructed.
• Once the whole lantern frame is made, it will be positioned onto the frame that is sealed to the upstand.
• Next, the glass panels will be fitted into place. How this is done will depend on the brand of roof lantern you have chosen to go with.
• Once the glass is in place, there will be external caps to fit, which will seal up the roof lantern, making it entirely weatherproof.

Can I Install a Roof Lantern Myself?

There are two main sections to installing a roof lantern. The first is making a hole in the existing roof, and the second is fitting the roof lantern.

Making the hole is the more technically difficult part, and you may need to check that your roof is structurally sound before you begin.

If you put the hole in the wrong place, you could damage the structure of your home. In most cases, this is a job best left to a professional.

However, if you're keen on DIY, and want to complete part of the job yourself, you may be able to complete the installation of the roof lantern. Depending on the brand you choose to use, installation can be a simple job.

If you're installing a large roof lantern, you should make sure that you have help when laying it in place - you don’t want to drop your glass lantern and break it accidentally.

Choosing a Roof Lantern

Roof lanterns come in a wide variety of shapes, sizes, and styles. Some of your decisions will be limited by the space that you are working with.

Let's take a closer look at some of the most common roof lantern options.

Shape of Roof Lantern

The shape you choose will depend on the space that you have.

Rectangle Roof Lantern Cost

These are based on the traditional Victorian shape. They are long and thin and are often placed over hallways.

They work well in open-plan spaces and can be used to define the flow of a space.

The price for a small, midrange rectangular roof lantern starts at £700.

Square Roof Lantern Cost

Typically, square roof lanterns are placed in the centre of a space. They are modern in appearance and are designed to be symmetrical.

They can be used in smaller spaces or to highlight points within a larger room.

The price for a small, midrange square roof lantern starts at £650.

Polyhedral - Octagonal To Hexadecagonal Roof Lantern Cost

These many-sided roof lanterns give a space a feeling of grandeur. They feel a little like a tower or turret made from glass.

They work well in circular or unusually shaped spaces.

The price for a small, midrange polyhedral roof lantern starts at £750.

Style of Roof Lantern

You can make some choices that are more about the style and finished look of your roof lantern. You can make these style choices with any shape roof lantern.

Cupola Roof Lantern Cost

A cupola is a secondary structure on top of a roof lantern. It makes the lantern stand higher above the rest of the roof.

These are often used on larger homes to make the roof lantern look more proportional from the outside. The cost of a cupola will depend on what sort of roof lantern you get and the material it is made from.

They are custom-made, so prices can vary.

Double/Triple Lantern Roof Lantern Cost

Multiple lanterns can be used to divide up a space or provide a larger glass area. They can be directly one after the other or separated by part of the original roof.

There is no extra cost for having a double/triple lantern. It is just the cost and installation for all the lanterns you choose.

Finial Roof Lantern Cost

A finial is a shaped piece that sits at the apex of your lantern. The most popular option is a round ball shape. More minimal designs may look better with no finial at all.

The average cost of a finial is around £35.

Frame Material for Roof Lantern

The material you choose for the frame will greatly impact your roof lantern. The frame is the most visible part of a roof lantern so it will determine the final look.

The choice of frame material can also have a large impact on the cost of your roof lantern.

uPVC Roof Lantern Cost

This is the lower-cost option. They have been around for a while and are easy to find. There are many options, and you can even get fake woodgrain finishes.

Prices start from £375.

Pros

• ✔ Lots of colour choice
• ✔ Cheaper than other roof lantern materials

Cons

• ✖ Can expand in the heat
• ✖ The weakest option, needing wider struts

Aluminium Roof Lantern Cost

Aluminium is a more modern option. It is a higher-end option. However, it is useful for creating a modern, minimal look. The strength of aluminium means that it can support larger panes of glass.

Prices start from £640.

Pros

• ✔ Strong and Durable
• ✔ Can use thinner rafters
• ✔ Can support large panes

Cons

✖ Shorter lifespan than uPVC

Wooden Roof Lantern Cost

This is the most expensive and time-consuming option. The frame has to be custom-built. The final look is very traditional and is timeless.

Prices start from £1,350.

Pros

• ✔ Traditional Look
• ✔ High-quality craftsmanship

Cons

• ✖ Most expensive option
• ✖ Require regular maintenance

Building Regulations & Planning Permission for Installing a Roof Lantern

When you install a roof lantern, you will be subject to building regulations.

In most cases, you will not need planning permission, as most roof lanterns will fall under permitted development.

Building Regulations

There are several aspects of the project that building regulations will apply to. You should have an inspection once the work is complete to ascertain if the work is up to the required standard in the following areas:

Roof Strength

The roof must remain structurally sound after the hole for the roof lantern is made. This means that adequate supports must be fitted to ensure the roof is structurally sound.

Weather Proofing

The new roof lantern must be adequately sealed to the existing roof. This often requires the use of silicone to create a waterproof seal at the base of the frame.

Ventilation

The room with the roof lantern must have proper ventilation. This can be achieved through the roof lantern or by other means, but there must be adequate airflow.

Energy Conservation

The roof lantern that you install must meet basic energy conservation standards. The best indication of this is the U value. The roof light should not have a U-value of more than 1.6.

Planning Permission

In most cases, you do not need planning permission to install a roof lantern.

If your roof lantern falls within these guidelines, it's permitted development, and there is no need for planning permission:

• The final result is no more than 150mm from the existing roof plane.
• No addition is higher than the highest part of the roof.
• Any side-facing windows must be obscure-glazed and over 1.7m above the floor.

Benefits of Installing a Roof Lantern

Roof lanterns are very popular, not only because they look good, but because they offer a lot of other benefits.

Increases Natural Light

With an opening in the roof, you allow light to enter the room all day long. The addition of natural light into a space can have a dramatic effect on the feel of a room. It is especially effective in rooms that have few or no windows.

Reduced Energy Costs

With a roof lantern, you will find that you do not need to use lighting in that space during daylight hours.

Roof lanterns are also very energy efficient, and they offer a better thermal barrier than the rest of your roof does. In other words, they will reduce your heating bills in winter.

Brings the Outside In

During the day, a roof lantern lets the sunlight in, and during the night, you can watch the night sky. If it rains, you can listen to the soothing drum of the rain on the glass. In all these ways, a roof lantern connects your home to the outside world.

Makes Rooms Feel Larger

Adding a roof lantern is an effective way of making a space feel larger than it is. The added light and the views of the sky create a more open feeling which can make a room more enjoyable to spend time in.

Increased Home Value

Roof lanterns are an appealing architectural feature, and are often associated with wealth and luxury. Homes with roof lanterns tend to sell for more money and spend less time on the market.

Weatherproof

Roof lanterns are resistant to the elements in ways that traditional roofing is not. You can expect your roof lantern to offer better protection from wind, rain, and changes in temperature.

Low Maintenance

Roof lanterns have a lot of design behind them, and they are designed and fitted to be self-washing. This means that when it rains, it will clean your windows, removing the need for maintenance. You can expect your roof lantern to last as long as, if not longer than the rest of your roof.

Wow-Factor

Roof lanterns look impressive, both from the inside and the outside of your home. It will add a real statement piece to your home. This can make it a wonderful place to live, and can make it easier to sell your home, if you wish to.

Cost of Roof Lantern Removal

If you have a roof lantern that you want to remove, it is not a terribly big job. Most contractors will be able to remove a roof lantern in a few hours and will charge you for their time and the disposal of the materials.

The real cost will depend on how you want to fix the hole in your roof. If you are replacing your old roof lantern with a new one, then the new roof lantern installation cost will be similar to that of a new roof lantern. The price for removing the old lantern will be similar to the cost of making a hole for a new flat roof lantern.

If you intend to restore the original roof structure, then you will need to pay the cost of the roof repair. This will largely depend on the size of your roof lantern and the type of roof it is on.

Checklist: Hiring Contractors to Install a Roof Lantern

A wide range of contractors can install roof lanterns. Here are some of the things you should look for when choosing yours:

• Look for an installer who is familiar with the brand and type of roof lantern you want to use - you don’t want them learning how to install it on your home.
• You should also seek out an installer who has good reviews and is willing to put you in touch with former, satisfied clients.
• Make sure you ask for a written, itemised quote from your contractor so you can see what's included in your fee. Be sure to check for things like waste removal, skip hire, and scaffolding hire if needed.
• You should look for a contractor with FENSA certification because this means that they should install your roof lantern in compliance with building regulations. They are registered with the local council, and you have some recourse if something goes wrong.

FAQs

Sources

https://www.planningportal.co.uk/permission/common-projects/roof/roof-planning-permission
https://www.rooflanterns.co.uk/stock-size/