Transform your space with our stunning bespoke flat rooflights.
Designed to flood your space with natural light, flat rooflights open up any room, creating a warm, inviting atmosphere year-round.
Enjoy expansive sky views, a closer connection to nature, and sleek, contemporary design – perfect for a space that inspires calm and comfort.
Get yours today in a custom size and enjoy Fast UK Delivery and our Best Price Guarantee.
You can also view our wider range of flat roof windows, or learn more about flat roofs and rooflights in our helpful guides below:
- Can You Install a Rooflight on a Flat Roof?
- Flat Roof Extensions – A Complete UK Guide
- Flat Roof vs Pitched Roof Skylight Extensions
- Flat Roofs: Complete Guide
What are the benefits of flat skylights?
- Brighter, more inviting spaces: Flat roof skylights let in up to twice as much light as vertical windows, creating brighter, more welcoming rooms and supporting better mood, focus, and wellbeing. Discover the benefits of natural light.
- Modern, stylish design: Sleek and contemporary, our skylights refresh your home’s look and create spaces you’ll enjoy spending time in.
- All-weather reliability: Built with high-quality materials, our rooflights are durable, energy-efficient, and made to your exact specifications to meet building regulations.
- Boosted property value: Homes with spacious, light-filled rooms are more attractive to buyers, often increasing resale value.
- Peaceful indoor environment: Acoustic insulation helps keep outdoor noise out, making your home quieter and more relaxing.
- Make your room feel more spacious: Flat rooflights open up your space for a home that feels bigger, calmer, and less cluttered. Learn more ways to make a room look bigger.
- Triple-glazing benefits: Triple-glazed options mean superior insulation, lower energy bills, and enhanced security. View our blog on triple-glazing vs double-glazing.
Where can you install a flat rooflight?
- Living room: Brighten your main social space with plenty of natural light.
- Kitchen: Make cooking and dining areas feel fresher and more spacious.
- Bedroom: Wake up to natural daylight for a healthier, happier start.
- Bathroom: Add light without compromising privacy or ventilation.
- Garage: Light up your parking or storage area without needing electric lights.
- Outbuilding (e.g., garden office or shed): Create a bright, comfortable workspace or hobby room.
- Single-storey extensions: Bring daylight into your new home addition to make it feel bigger.
- Commercial building (offices, shops, etc.): Enhance staff productivity and create a welcoming environment.
- Any space needing more natural light: Perfect for dark hallways, utility rooms, or enclosed spaces.
Why choose Toughened Glass Systems?
We are flat roof window experts with years of experience in the industry. View our testimonials to see what our customers had to say about us, or read on for some key reasons to buy your flat rooflight from us:
- Independent testing: Our flat roof skylight system meets RVA-accredited standards for Air Permeability (EN12207) and Water Tightness (EN12208) when installed according to our guide.
- More light: The visible bottom pane size shown is smaller than the total glass area—the top pane is 100mm larger all around, letting in more light than competitors’ smaller visible glass.
- Price match guarantee: We promise to match prices from any UK retailer to ensure you get the best deal.
- High-quality materials: Manufactured using premium materials from trusted suppliers like Pilkington, delivering attractive design and excellent thermal performance for energy efficiency.
More flat rooflights
We stock a range of products similar to this flat rooflight, including:
- Triple-Glazed Self-Cleaning Rooflight
- Framed Rooflight TGS
- Korniche Skylight
- Framed Flat Skylights
- Coxdome Flat Glass Rooflight
- Walk On Rooflights
View our full collection of rooflights and roof windows for even more great features
FAQs
What type of skylight is best for a flat roof?
Popular options include:
- Flat Roof Windows: Windows designed to be installed flush with flat roofs, providing natural light and views while maintaining a sleek, low-profile appearance.
- Fixed Rooflights: Non-opening skylights that flood interiors with natural light without ventilation.
- Roof Lanterns: Elevated structures that sit above flat or pitched roofs, creating a striking architectural feature and flooding spaces with light.
- Pyramid Rooflights: Rooflights shaped like a pyramid, designed to maximise light intake and add a distinctive geometric aesthetic.
- Opening Rooflights: Skylights that can be opened to provide ventilation as well as natural light.
- Dome Rooflights: Curved, dome-shaped rooflights that maximise light and offer durability and weather resistance.
Our flat rooflight is our most popular product, trusted by homeowners and business owners alike for its versatility and performance.
How much does a flat roof skylight cost?
The price of your flat rooflight will depend on a range of factors, including size, glazing, finish, and whether you opt for any additional features.
We offer flat rooflights for as little as £285.60 inc. VAT, representing fantastic value for money.
What is the difference between a roof lantern and a flat roof light?
The main difference between flat rooflights and roof lanterns is that rooflights have a much lower profile. In other words, it won’t stand out much above the roofline. That means in turn that installing a flat glass rooflight doesn’t change the external appearance of the building as much.
View our helpful article on the key differences between roof lanterns and rooflights for more information.


















The first step in purchasing your rooflight would be to measure the structural opening where the rooflight will be installed. You should allow for 5mm tolerances all around to allow the bottom pane of the rooflight to fit smoothly into the opening. As an example, if your tight opening measurements are 1010mm by 1010mm we would recommend you purchase a rooflight with a bottom pane of 1000mm by 1000mm so it slots in smoothly.


