3500mm x 3500mm Made to Measure Glass Flat Roof Window Lantern

Our 3500mm x 3500mm Square Gazebo Style Roof Lantern is a large made-to-measure flat roof window light featuring four equal-sized sides to create an impressive and symmetrical gazebo-style roof.

At 3.5 metres square internally, this substantial roof lantern is ideal for large extensions, kitchens, dining rooms, conservatories, garden rooms and open-plan living spaces where you want to introduce plenty of natural daylight from above.

Complete 3500mm x 3500mm Roof Lantern

The lantern is supplied as a complete roof system including the window frames, roof structure, guttering, your choice of glass or polycarbonate roofing and a decorative finial.

• Internal Frame Size: 3500mm x 3500mm
• Design: Square gazebo style with four equal sides
• Manufacture: Made to measure
• Window Frames: Included
• Roof Guttering: Included
• Roof: Choice of glass glazing or polycarbonate
• Decorative Finial: Included

3500mm x 3500mm Internal Frame Size

Important: The stated 3500mm x 3500mm size is the internal frame measurement. The overall external dimensions will be larger once the window profiles and cill are included.

The window profiles are approximately 70mm wide. Allowing 70mm on each side gives an approximate overall external frame size of:

3640mm x 3640mm external frame size.

The cill is approximately 160mm wide. Allowing 160mm on each side gives an approximate overall external cill size of:

3820mm x 3820mm external cill size.

3500mm x 3500mm Roof Lantern Dimensions

• Internal Frame Size: 3500mm x 3500mm
• Approx. External Frame Size: 3640mm x 3640mm
• Approx. External Cill Size: 3820mm x 3820mm

Large Square Gazebo Style Roof Lantern

The four equal-sized sides create the distinctive square gazebo-style roof lantern. At 3500mm x 3500mm internally, this is a substantial lantern designed to become a major architectural feature within a large extension or open-plan room.

The raised glazed roof helps bring daylight into the centre of larger spaces, making it particularly suitable for rooms where conventional windows and doors cannot provide enough natural light.

Important Information About the Roof Design

Please note: The roof lantern shown in the product photographs may be the smaller 1000mm x 1000mm version.

Larger gazebo lanterns require different roof configurations to provide the necessary strength and structural support. The roof configuration of this 3500mm x 3500mm lantern may therefore differ from the smaller roof lantern shown.

Glass or Polycarbonate Roof Options

The roof lantern can be supplied with a choice of glass glazing or polycarbonate roofing, allowing you to select the most suitable option for your project.

Glass provides a clean glazed appearance and excellent natural daylight, while polycarbonate provides a lightweight and practical alternative.

Ideal for Large Flat Roof Extensions

A 3500mm x 3500mm roof lantern provides an impressive overhead glazed area and is particularly suited to larger residential and commercial projects.

• Large Kitchen Extensions
• Kitchen-Diners
• Open-Plan Living Areas
• Dining Rooms
• Garden Rooms
• Conservatories
• Large Flat Roof Extensions
• Commercial & Hospitality Spaces

Made to Measure Glass Flat Roof Window Light

Our square gazebo roof lanterns combine traditional styling with the convenience of a complete made-to-measure roof system. The windows, roof structure, guttering, glass or polycarbonate roofing and decorative finial are supplied together to create the finished lantern.

Important: Please carefully check the internal frame, external frame and external cill dimensions before constructing the roof opening, kerb or supporting structure.