Triple Glazed Frameless Skylight / Rooflight – 300 x 300 mm, Flat Roof

Bring natural light into your space with the Skyline Sky Lights 300 x 300 mm Triple Glazed Frameless Skylight — a sleek, energy-efficient solution designed for flat roofs. This non-opening unit offers exceptional thermal insulation and a clean, modern finish, ideal for contemporary residential or commercial applications.

Crafted with three high-performance glass layers, it features toughened and laminated safety glass, self-cleaning coating, and a low U-value of 0.9 W/m²K. The UV-resistant design helps protect interiors while allowing optimal light transmission with a G-value of 58%.

🔍 Technical Specifications:

• Glazing Type: Triple Glazed

• Internal Glass Size: 300 x 300 mm

• External Glass Size: 500 x 500 mm

• Top Pane: 6 mm thermally toughened Planibel Clearlite (BS EN 12150)

• Middle Pane: 4 mm thermally toughened Planibel Clearlite (BS EN 12150)

• Bottom Pane: Stratobel Clearlite 44.2 iplus 1.1 (Laminated with Low-E coating – EN 14449)

• Spacer: 15 mm Black Warm Edge (both gaps)

• Air Gap: 15 mm 90% Argon Filled (both layers)

• U-Value: 0.9 W/m²K

• G-Value: 58%

• Weight: 6.45 kg

• Self-Cleaning Glass: Yes

• UV Protected: Yes

• Tint: Clear

🛡️ Certified for Safety & Compliance

At Skyline Sky Lights, safety comes standard. Our products are fully CE marked and comply with all applicable British Standards and Building Regulations. Designed for use at up to a 45° pitch, these skylights are built to last and perform.

🛠️ Installation Guidelines:

• Allow a 10 mm fitting margin internally from upstand to upstand.

• Upstand should be built using 2×1 or 2×2 inch timber.

• Use foam rope on the internal supporting batten for pressure balance.

• Seal perimeter with Dowsil 791 black silicone — avoid acrylic sealants.

• Note: External dimensions include a black ceramic border, extending size by 200 mm each direction.

🧮 Need a Custom Size?

Use our custom skylight calculators to order a perfect fit. We offer made-to-measure options to suit your exact project needs.

🏆 Why Choose Skyline Sky Lights?

• Industry-leading glass technology

• Energy-efficient, self-cleaning, and UV-resistant

• Durable frameless construction

• 20-Year Manufacturer Warranty

• Free delivery within London (M25) & nationwide shipping available