Our Flat Roof Skylights are composed of three distinct glass panes, each contributing to the unit’s durability and thermal efficiency:
- Top Pane: 6 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
- Middle Pane: 6 mm iplus Thermally toughened glass with Low-E coating EN 12150
- Bottom Pane: Stratobel Clearlite 44.2 / Laminated glass EN 14449
Premium Flat Roof Skylights
Thinking about adding a flat roof windows skylights but worried about heat loss? Our Flat Roof Skylight 1200 x 1800 mm features an impressive U-value of 0.9 W/m²K, thanks to its triple-glazed units and warm edge spacer technology. This provides superior insulation, keeping your space warm in winter and cool in summer, while allowing in abundant natural light.
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Experience outstanding thermal performance with our triple-glazed units and warm edge spacer technology, resulting in a U-value of 0.9 W/m²K for year-round comfort and reduced energy expenses.
- Unobstructed Views: The frameless design maximizes natural light penetration and offers breathtaking panoramic views of the sky.
- Self-Cleaning Feature: Enjoy easy maintenance with a sunlight-activated self-cleaning feature that keeps your glass sparkling clean.
- Versatile Installation: Ideal for flat roofs with pitches between 6° and 45°, making it suitable for various home styles.
- Quiet Ambiance: Effective soundproofing ensures a peaceful indoor environment.
- UV Protection: Safeguards your interior from harmful UV rays.
- Safety First: Built with safety-toughened glass for enhanced security.
- Regulation Compliant: Fully compliant with British Standards & Building Regulations and carries the CE safety marking.
Essential Skylight Accessories
Enhance your flat roof skylight experience with these must-have accessories for smooth installation and optimal performance:
- Skylight Blinds for Flat Roof Window 1200x1800mm: Custom-fit blinds provide light control and privacy, perfectly tailored to your skylight size.
- Installation Kit for 1 x Flat Roof Skylight 1200x1800mm: A comprehensive kit that ensures secure and hassle-free installation for optimal performance and durability.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): Offers effective sealing and structural support during installation.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: Creates a durable, weatherproof seal around your skylight, keeping the elements out.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: Replenishes the self-cleaning properties of your skylight, ensuring easy maintenance and spotless glass.
Choose Skylights.co.uk
We offer an extensive range of standard sizes, including the popular 1800 x 1200 mm skylight (also known as 1.8 x 1.2 m roof light), as well as fully custom skylights tailored to your specific needs. No matter the project, our flat rooflights provide exceptional thermal performance with innovative features like triple glazing, ensuring your space remains comfortable year-round. They also flood your space with beautiful natural light, creating a brighter and more inviting atmosphere. Enhance any setting with the sleek, modern design of our flat rooflights.
Download our full product catalogue to explore our extensive Flat Roof skylight range and find the perfect solution for your project. Ready to discuss your skylight needs? Contact us today!
🗺️ Where to Buy 1200 x 1800 mm Roof Lights Near Me
Searching for a 1200 x 1800 mm roof light near you? Also referred to as a 1.2 x 1.8 m rooflight, this size is a brilliant match for larger interior zones like open-plan lounges, rear extensions, or creative studios. We specialise in frameless rooflights that bring more daylight, better efficiency, and a polished finish to every space.
✅ Balanced Light Distribution for Spacious Rooms
✅ Trusted by UK Architects, Designers & Builders
✅ Certified to UKCA Standards – Fully Compliant
✅ Frameless Glazing – Pure Sky View with No Distractions
✅ Installer-Friendly Design with Expert Support Available
Our rooflights are made in-house with technical precision, finished for visual harmony, and delivered quickly across the UK—ready to install and impress.
Henry Lewis –
The flat roof windows have transformed our interior. The quality is incredible and the delivery was quick.
Samuel Allen –
The quality of the flat roof skylights is incredible. The customer service is very friendly and professional.
Chloe Wright –
The flat roof windows have given new life to our house. The delivery was quick and the customer service was excellent.
Sinead McCrory –
Our flat roof skylight in Leeds has given our home such a modern look. The natural light it lets in has completely transformed our kitchen.