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Flat Roof Windows

A flat roof window brings light where a pitched roof can't. At Rooflights & Skylights UK, we design our flat roof windows to sit flush and sleek, pulling natural daylight down into rooms that would otherwise feel dim and boxed in. They're built specifically for flat roofs, so they don't leak, don't collect water and don't need you fussing over them every few months. Strong, weatherproof and fairly priced, they do the job without the drama.

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Framed Fixed Flat Rooflight 1000×1000mm (internal size)

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Framed Fixed Flat Rooflight 1000×1000mm (internal size)
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Framed Fixed Flat Rooflight 1000×1200mm (internal size)

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Framed Fixed Flat Rooflight 1000×1500mm (internal size)

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Framed Fixed Flat Rooflight 1000×2000mm (internal size)

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Framed Fixed Flat Rooflight 1000×2500mm (internal size)

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Framed Fixed Flat Rooflight 1000×3000mm (internal size)

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Framed Fixed Flat Rooflight 500×500mm (internal size)

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Framed Fixed Flat Rooflight 600×1200mm (internal size)

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Framed Fixed Flat Rooflight 600×1800mm (internal size)

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Framed Fixed Flat Rooflight 600×900mm (internal size)

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Frameless Fixed Flat Rooflight 1000×1000mm (internal size)

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Frameless Fixed Flat Rooflight 1000×1500mm (internal size)

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Frameless Fixed Flat Rooflight 1000×2000mm (internal size)

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Frameless Fixed Flat Rooflight 1000×2500mm (internal size)

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Frameless Fixed Flat Rooflight 500×500mm (internal size)

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Frameless Fixed Flat Rooflight 600×1200mm (internal size)

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Frameless Fixed Flat Rooflight 600×1800mm (internal size)

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Frameless Fixed Flat Rooflight 600×900mm (internal size)

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Free Quote

A flat roof window brings light where a pitched roof can't. At Rooflights & Skylights UK, we design our flat roof windows to sit flush and sleek, pulling natural daylight down into rooms that would otherwise feel dim and boxed in. They're built specifically for flat roofs, so they don't leak, don't collect water and don't need you fussing over them every few months. Strong, weatherproof and fairly priced, they do the job without the drama.

Read More

Get Flat Roof Windows for More Daylight with Less Effort

Our roof windows for flat roofs pull more daylight in so you can relax and enjoy day and night sky view in every room without raising the roof. Whether it’s your kitchen, hallway or utility space, our roof windows instantly make your space feel bigger, brighter and more breathable.

Built for Harsh UK Weather Conditions

Every flat roof window we craft is engineered to sit on an upstand with a slight pitch (5-degree). That clever angle pushes rainwater to flow off fast. This helps you avoid grime buildup, standing water and the leaks that follow. Its low-maintenance protection is designed for real weather. So your home stays dry, clear and ready whether it rains or shines.

Get a Clean Look from Every Angle

Flat roof windows come with ultra-slim frames and give off a clean, architectural look whether you’re gazing up from your sofa or from your kitchen table. They blend into your roofline and are perfect for modern homes where every detail matters.

Let’s Find the Perfect Flat Roof Windows for Your Space

Ready to get a brighter room? Explore our range of windows for flat roofs. Get in touch with us for honest advice from our experts.

Roof Windows Designed to Fit Perfectly in Your Roof

Every flat roof window we make is sealed tight, weather-tested and covered with a 10-year guarantee. We ship these anywhere in the UK within 3–5 working days. Custom sizes are delivered in 7-10 days.

Want a Custom Sized Flat Roof Window?

Call one of our experts today to get free consultation or a free quote.

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Reduce Rising Energy Bills with our Flat Roof Windows

These flat roof windows aren’t just panes of glass. They’re made with advanced double or triple glazing that works hard behind the scenes. This gets you better insulation in winter and less heat buildup in summer. And gets you a brighter, more comfortable space year-round. All while reducing your electricity bills.

Let’s Get Your Roof Window Sorted

Enhance the natural light in your home with our range of flat roof windows. Contact our experts for honest advice and guidance.

Smooth Design for Easy Maintenance

With fewer nooks and a smooth top surface, these windows for flat roofs are easier to maintain than traditional pitched versions. Some even self-shed water and dirt, keeping your rooflight pristine year-round.

Let's Light Up Your House

Whether you need a quick quote, advice on the best fit, or you're ready to shop you're in the right place. Call us for expert guidance, or browse our range of flat roof windows now.

Frequently Asked Questions

Yes, you can use curved-glass or subtly angled flat-roof windows with at least 2–3° pitch to prevent water pooling. Proper flashing ensures effective drainage and long-lasting performance .

Not if they’re installed correctly. With the right flashing kits and professional fitting, our flat roof windows made in the UK remain watertight even under the harsh British rain.

A slight 2–5° pitch is optimal to help drip off water.

No. At Rooflights & Skylight UK we supply offer fixed roof windows. If you are looking for ventilation options, check our Roof Lanterns section or get in touch with our support team.

It varies based on roof pitch and structure. A professional installer will assess your roof to recommend the right size, style and placement for the best results.