Glass Skylights & Rooflights

These terms are often used interchangeably. Technically, “rooflight” is more common in the UK construction industry, especially for flat roofs, while “skylight” is often used more generally by customers in reference to flat roof windows.

At EGW, we use both terms to ensure we reach all customers looking for roof windows.

You will also come across the term “roof lantern”, which is a specific style of roof window that creates a raised pyramid structure instead of a flat skylight. They all let in more light, but different roof windows will have different installation styles depending on their shape and design.

If you have any questions about raised or flat glass rooflights, simply ask our team for more information.

Our current range is designed for flat roofs. However, some models may be suitable for low-pitch applications (between 2° and 15°).

Please check the product specifications to make sure the design and measurements match up with your planned installation. As all roof windows are made to order, they are not returnable, so you will not be able to apply for a refund if you order the wrong size.

Each product page has detailed information about the design specs and instructions for easy installation. Of course, if you need help with your setup, you can contact us for advice on choosing a product to suit the same orientation as your roof.

Yes. Many of our models are available with or without upstands (kerbs). You’ll find this information clearly listed on each product page.

While several options are designed to be installed on an existing builder’s kerb, other designs come with a PVC kerb included that can be mounted directly on a flat roof. These include fixed, manually opening, and electric opening flat roof windows.

When you order your rooflight, double-check the kerb measurements to ensure it will fit where you plan to install it. Our team is on hand to offer guidance if you need to contact us by phone or email for advice on our rooflights with kerbs.

Absolutely. All our rooflights are designed with energy efficiency in mind and include thermally broken aluminium frames to minimise heat loss.

This means frameless glazing typically isn’t possible, because new rooflights must have thermally broken frames to maintain a U value of at least 1.4 W/m²K.

Our laminated glass rooflights have a centre pane U value of 1.1 W/m²K – the lower the number, the better the insulation, ensuring effective heat control.

Yes, we offer custom rooflight sizes on request. Just get in touch with our team and we’ll help you get exactly what you need for your project.

Whether you need a flat roof skylight, pitched roof window, or a pyramid window, you can enquire about custom sizes to receive a bespoke quote.

Please note that our range only includes double glazing with aluminium frames – we do not offer frameless or triple glazed glass options. However, if you need a bespoke piece of flat glass for a roof window, you can still speak to our team to see what we can do for you.

In England and Wales, safety glass skylights are generally permitted developments. However, this only applies if the rooflight doesn’t project more than 150mm from the roof slope and no part of it is higher than the tallest part of the roof.

There are other conditions that might apply to flat skylights, including the location and whether you’re creating a roof terrace, so it’s worth checking with your local authority if you aren’t sure about needing approval for fixed or opening rooflights.

Whichever type of rooflight you want to use, it’s also important to make sure the design and installation complies with UK building regulations. This includes efficient drainage, insulation, load support, and fire safety provisions.

Whether you’re installing it yourself or hiring builders for professional fitting, it’s your responsibility to confirm the window is fitted correctly and safely.