Rooflight Factory Flat Roof Skylight – Triple Glazed for Strength, Style, and Efficiency
Enhance your home with the Rooflight Factory Flat Roof Skylight, a premium architectural feature designed to bring abundant natural light while ensuring superior insulation and durability. Crafted with precision to meet British standards, this triple-glazed skylight delivers exceptional clarity, energy efficiency, and long-term performance – the perfect blend of design and function for modern living spaces.
Triple-Glazed Construction for Optimal Performance
Each Rooflight Factory skylight is built with three high-performance glass layers, working together to ensure outstanding durability, insulation, and light transmission:
- Top Glass Layer: 8 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
- Middle Glass Layer: 6 mm iplus Thermally toughened glass with Low-E coating EN 12150
- Bottom Glass Layer: 8 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
Note: For skylights wider than one metre, the bottom glass pane is thermally toughened for improved static stability and safety.
This precision-engineered triple-glazed design achieves a U-value of 0.9 W/m²K and a G-value of 58%, delivering excellent insulation and energy efficiency. The Low-E coating helps retain warmth in colder months while reducing solar heat in summer, keeping your home comfortable year-round. The clear tint enhances brightness while maintaining a sleek, unobtrusive look.
Product Specifications
- Glazing Type: Triple Glazed
- Internal Glass Size: 1500 x 2000 mm
- External Glass Size: 1700 x 2200 mm
- Top Glass Pane: 8 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
- Middle Glass Pane: 6 mm iplus Thermally toughened glass with Low-E coating EN 12150
- Bottom Glass Pane: 8 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
- Spacer Type: 15 mm Black Warm Edge
- Air Gap: 15 mm, 90% Argon Filled
- U Value: 0.9 W/m²K
- G Value: 58%
- Net Weight: 179.8 kg
- Self-Cleaning: Yes
- UV Protection: Yes
- Tint: Clear
Safety and Compliance
The Rooflight Factory Flat Roof Skylight fully complies with British Standards and Building Regulations, offering both performance and peace of mind. It is CE certified and marked with all relevant safety standards, confirming conformity with European quality directives. Suitable for roof pitches up to 45 degrees, this skylight is ideal for a wide range of residential and commercial applications.
Installation Recommendations
For best results, follow these installation guidelines to ensure a precise, watertight fit:
- Dimensions: The top glass pane includes a black border, extending the external size by 200 mm in each direction.
- Opening Preparation: Allow an extra 10 mm internally from upstand to upstand for accurate fitting. For example, a 600 x 900 mm unit requires an opening of 610 x 910 mm.
- Upstand Construction: Build the upstand using 2×1 or 2×2 inch timbers for stability and ease of installation.
- Foam Rope & Sealant: Place foam rope on the internal support baton to distribute the glass weight evenly. Use Dowsil 791 black silicone sealant for a secure, watertight perimeter. Avoid acrylic sealants, as they are not compatible with this unit.
Customisation Options
Rooflight Factory offers complete flexibility with its Custom Size Frameless Skylight Calculator and Custom Oversize Frameless Skylight Calculator. Whether you’re working on a bespoke design or a large-scale project, you can easily tailor your skylight dimensions to suit your exact requirements.
Why Choose Rooflight Factory?
- Best Price Guarantee
- 20-Year Warranty
- Secure Payment Protection
- Self-Cleaning & UV Protected Glass
- Clear Tint for Maximum Natural Light
- Free Delivery within London (M25)
- All Panels Thermally Toughened for Safety
- Made in the EU with London-Based Stock
- Quick and Easy Installation
- Step-by-Step Installation Guide Included
Rooflight Factory Flat Roof Skylights combine high-quality materials, advanced glazing technology, and elegant design to create a bright, comfortable, and energy-efficient home. Built to last and designed to impress, they are the perfect choice for those seeking superior light performance and modern architectural style.


















































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