The Perfect-Sized Rooflight

Published: 12th January 2023

Selecting the perfect-sized flat roof window for your home must be taken seriously. With so many options to choose from, it can feel overwhelming when trying to find something that fits both your design aesthetic and budget. 


But with some understanding of the qualities and features associated with different styles of roof windows, you’ll be able to pick an option that looks great and meets all of your requirements—all without breaking the bank!


In this blog post, we will look at the advantages of different sizes of roof lights and help guide you to making the right choice that suits both your style preferences and practical needs.

The Standard Rooflight Sizes In The UK?

When selecting a roof light, size is a critical factor to consider. The most common roof light sizes range from 412mm to 3000mm in width and 520mm to 2025mm in length.


However, it’s crucial to remember that the correct size roof light will vary. The type of installation, whether pitched or flat and the roof light’s shape will all influence its dimensions. You will also need to consider whether you want an opening roof light.


So, it’s worth taking the time to research and choose the right size roof window that meets your requirements. A perfectly-sized roof light could transform your space, enhancing natural light, boosting ventilation and adding a touch of elegance.

The Right Rooflight For The Right Room

If you’re looking to add a skylight to your home, it’s vital to get the sizing just right for the best possible result.


First, consider the room’s square footage and the height of the ceiling. You want to ensure the skylight is appropriately sized for the room to provide enough natural light without overwhelming the space.


Next, think about the orientation of the skylight and how much light it will receive throughout the day. Depending on your climate, opt for a more oversized skylight for more heat gain in the winter or a smaller one to reduce excessive heat gain in the summer.


Other factors to consider would be your roof’s structural capacity and the installation cost of larger skylights. Once you’ve considered all of these considerations, you’ll be able to determine the perfect size for your skylight and enjoy the beauty of more light illuminating your home.

How are skylights measured?

When choosing the perfect skylight, being mindful of the correct measurements is essential. While it might seem intuitive to measure based on the size of the hole in your roof, skylights are actually measured by their internal opening to the edge of the external upstand.


This is crucial in ensuring that your skylight fits and sits correctly. An upstand serves as the foundation for your skylight, creating an adequate height from the roof surface and a sufficient slope for water run-off.


So, before you begin the installation, ensure you have the correct measurements to guarantee a seamless and functional skylight solution.

Custom Sized Roof Lights

One of the best things about roof lights is that they can be customised in almost any size. Whether you’re looking for a skylight that covers only a small portion of your roof, or a larger one that runs the entire length of your ceiling, the possibilities are endless.


The ability to customise your roof light also means you can tailor it to your specific needs, ensuring you get the right amount of light for your space. With so many options available, it’s easy to get creative and design a roof light that fits your vision perfectly.

Picking The Perfect-Sized Rooflight For Your Home

If you’re looking for the perfect size skylight for your home, it’s essential to consider the many factors that will affect your decision.


Your roof size, angle, budget, and glazing style will influence what kind of roof light you should pick. Fortunately, there are various options available in different sizes and shapes, so you can find something suitable to fit your needs.


Additionally, consider seeking professional advice from Ofset before making a purchase – they can help advise you on the best option for your home.