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
Are you thinking of installing a skylight but worried about heat loss? Our Flat Roof Skylight 400 x 2000 mm offers:
- An excellent U-value of 0.9 W/m²K
- Triple-glazed units for optimal insulation
- Warm edge spacer technology
This ensures your space stays warm in winter, cool in summer, and filled with natural light.
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Achieve outstanding thermal performance with triple-glazed units and warm edge spacer technology, providing a U-value of 0.9 W/m²K for year-round comfort and lower energy bills.
- Unobstructed Views: The frameless design maximizes natural light and offers breathtaking panoramic sky views.
- Self-Cleaning Feature: Keep your glass effortlessly clean with a sunlight-activated self-cleaning feature.
- Versatile Installation: It is suitable for flat roofs with pitches between 6° and 45° and fits a variety of home styles.
- Quiet Ambiance: Effective soundproofing ensures a peaceful indoor environment.
- UV Protection: Shields your interior from harmful UV rays.
- Safety First: Constructed with safety-toughened glass for enhanced security.
- Regulation Compliant: Meets all British Standards & Building Regulations and carries the CE safety marking.
Essential Skylight Accessories
Enhance your flat roof skylight with these must-have accessories for seamless roof window installation and peak performance:
- Skylight Blinds for Flat Roof Window 400x2000mm: Custom-fit blinds provide light control and privacy, tailored specifically for your skylight size.
- Installation Kit for 1 x Flat Roof Skylight 400x2000mm: This comprehensive kit ensures optimal performance and durability through secure, hassle-free installation.
- Foam Rope—structural Glazing Tape—9mm Thick (7.5m Rolls): This provides effective sealing and structural support during installation.
- Weatherproofing Sealant (Silicon)—DOWSIL™ 791, 310ml: This product creates a durable, weatherproof seal around your skylight, keeping the elements out.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: This product 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 2000 x 400 mm skylight (also known as 2 x 0.4 m roof light), as well as fully custom skylights to suit your specific needs. Whether you’re enhancing a residential space or illuminating a commercial property, our flat rooflights deliver exceptional thermal performance, natural light, and elegance. Download our full product catalogue for more details.
Whether you’re seeking to enhance a residential space or illuminate a commercial property, our flat rooflights are designed to deliver exceptional thermal performance, natural light, and a touch of elegance to any setting. Explore our extensive skylight range to find the perfect solution for your project.
Contact us today to discuss your skylight project!
🗺️ Where to Buy 400 x 2000 mm Roof Lights Near Me
Looking for a 400 x 2000 mm roof light near you? Also referred to as a 0.4 x 2 m skylight, this long, narrow format is ideal for walkways, lofts, and side return extensions where vertical daylight is key. We craft frameless flat rooflights designed to deliver light where conventional windows can’t.
✅ Slimline Skylight – Perfect for Side Returns & Hallways
✅ Custom Lengths Available to Fit Your Layout
✅ Thermally Efficient Triple Glazing
✅ Rated 5 Stars on Google
✅ UKCA Certified & Fully Compliant
Precision-engineered and delivered direct from our UK facility, this skylight adds drama, daylight, and design value—without taking over your space.
Jack Jones –
The attic skylight I got from Skylights.co.uk has been a game-changer. The difference in natural light in my loft is astonishing. Their roof windows are definitely the best on the market.
Sebastian Collins: –
Our staircase area has been beautifully illuminated by a frameless skylight, making every ascent feel special.
Sophia Patel –
Our new skylight has brightened up our kitchen beautifully. Cooking under natural light has never been more enjoyable.
George Wilson –
Our new loft skylight has completely transformed our attic. It’s now our favorite room in the house, all thanks to the beautiful natural light!
Lily Alexander –
Our staircase skylight has turned a previously unnoticed area into our most welcoming space in the house.
Emma Cooper –
I am very happy with the flat roof windows. The quality is premium and the customer service very attentive.