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Roof Windows

Roof Windows

Roof windows are a great way to add more natural light and ventilation to your indoor space while achieving higher energy efficiency.

At JJ Roofing Supplies, we stock over 7,000 roof windows in various sizes, styles, materials, and functionalities. Some of the roof window brands we stock up on include:

So, whether you're looking for small roof windows to improve ventilation or a large lantern to maximise the entry of natural daylight into your indoor space, there's a high chance we have the exact roof window you're looking for.

Roof Window Materials

The large majority of roof windows are made from one of the following three types of materials:

Timber (Nordic Pine)

Wood is a popular choice of material among window manufacturers. And it's easy to see why. Wood (especially pine wood) has great insulation properties, can last for a long time, and can bring a warm and natural look to any indoor space. And because of that, it's unsurprising that wood Fakro, Duratech, and Velux roof windows are some of the most popular products among our customers.
Although wood is a popular choice for roof windows, there are a few things that we'd like you to know about them. Wood windows are prone to expansion and contractions depending on indoor/outdoor humidity and temperature. Wood windows also require regular maintenance, which includes painting or staining for added protection.

Polyurethane (uPVC)

Compared to wood Velux, Fakro, or Duratech roof windows, their uPVC counterparts require significantly less maintenance, as they don't require painting or sealing. Furthermore, uPVC roof windows are also moisture resistant, making them suitable for humid environments such as your bathroom or utility room. Another great advantage of uPVC windows is that they are very easy to clean.
In terms of drawbacks, the only real disadvantage of opting for uPVC windows is that they come in limited colour options, which might not be ideal if you're trying to achieve a certain aesthetic.


Aluminium roof lanterns are lightweight yet strong and long-lasting. As aluminium is resistant to corrosion, aluminium roof lanterns will require minimal maintenance to preserve their shine. That's why they're a popular choice for property owners, especially those opting for more modern architectural styles.
One downside to aluminium roof lanterns is that aluminium is a great conductor of heat, making heat waves much more unpleasant. Additional thermal insulation may be required to minimise the effect of using aluminium roof lanterns during the hot summer.

Roof Window Styles

When it comes to roof window styles, there are plenty of options to pick from. The most popular roof window styles amongst our customers are:

Fixed Windows

As the name suggests, this type of ceiling window cannot be opened. It serves the single purpose of letting natural daylight into your indoor space. As a result of their simplicity, fixed roof windows are one of the most popular and cost-effective options, especially for areas of the roof that are hard to reach.
There are various types of fixed-roof windows, including fixed-pitched roof windows and flat-roof windows. Though the former option is quite commonly seen in UK households, the latter is by far the more popular choice.
Fixed windows are also versatile, so whether you go for Velux or Fakro roof windows (or any other brand, for that matter), they can be installed on all types of roofs, including gable, hip, Dutch, or flat roofs.

Centre Pivot Windows

Thanks to their central pivot point, these types of windows are often a preferred choice among property owners looking for a solution that can not only let in a lot of fresh air but is also easy to keep clean. At JJ Roofing Supplies, we stock hundreds of premium and budget-friendly roof windows with a centre pivot point that you can pick from.

Top-Hung Windows

Top-hung windows are hinged at the top, and as a result of that, they can only be opened at the top. Thanks to their design, they can create a large opening that lets in plenty of fresh air and creates an unobstructed view of the outside. What’s more, they can also be used as fire escapes.

Roof Lanterns

If you're on the market for a large roof window, a roof lantern may be just what you need. Roof lanterns are a popular flat roof window style designed to maximise the entry of natural light into your living space. Typically, roof lanterns feature a raised structure of several glass panels, which can either be transparent or have a coating to control UV rays, glare, and heat.

Operation Types

At JJ Roofing Supplies, we stock three different types of high-quality roof windows, including:


Electric roof windows are powered by electricity and are operated by a motor, which can be conveniently controlled via a remote control. This type of roof window is a great choice for hard-to-reach areas and is most popular in homes with more modern interiors. In some cases, electric roof windows also have a rain sensor. That way, if the window is open and it starts raining, it'll close automatically.


Like electric roof windows, solar roof windows are also operated by a motor. The only difference between the two is that solar roof windows are powered by solar energy, making them a more cost-effective and eco-friendly option. As with electric windows, their solar counterparts also feature rain sensors.


Manual roof windows are a standard choice for most property owners looking to add more light and ventilation to their living space. This type of roof window isn't operated by a motor, meaning it'll have to be manually opened and closed. And as a result of that, it's also typically the most cost-effective type of roof window you can get.

Why Choose JJ Roofing?

At JJ Roofing Supplies, we have our customer's best interests in mind. That's why we work tirelessly around the clock to source and supply over 7,000 (and counting) different roof windows to the UK market at the most competitive prices.
We also supply window blinds, window flashings, and window accessories to match the needs of your property. As a result, over the years, JJ Roofing Supplies has become the go-to roof window store for thousands of trade and commercial customers.
Besides the wide choice of roof windows that we have available, we've also made the ordering and delivering orders a breeze. Whether you’re looking for roof tiles for your flat or pitched roof, you can place your order online or by visiting one of our many physical locations in London and Hertfordshire. And within a couple of days, we'll deliver your roof windows right to your doorstep.
If you have any questions, feel free to contact us today. We'd be happy to answer any questions and help you choose the right roof windows for your property.


Further reading material regarding roof windows.

How To Clean A Skylight Window On Your Roof?

A Brief Guide To Roof Windows

Pitched Roof Windows Buying Guide

Flat Roof Windows Buying Guide

Do You Need Planning Permission for a VELUX Window?

What is a Sun Tunnel and A Guide to Choosing the Right One for Your Home

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