Pair of mahogany-frame glass roof lanterns on a flat-roof rear extension
Glazing

Roof Lights

Korniche & Atlas

Flat-glass roof lights that flood single-storey extensions, side returns and flat-roof additions with natural light. Slim aluminium sightlines, thermally broken frames, and walk-on, opening or fixed configurations to suit the brief — from a quiet ensuite over a freestanding bath to a fully glazed lantern over a kitchen island.

Key Features

Built to Perform

Flat-glass, lantern, walk-on and opening configurations

Thermally broken aluminium frames in any RAL colour

Self-cleaning, solar-control glass options

Sizes from 600×600mm up to 4 metres+ on bespoke fabrications

Electric opening + rain sensor available on opening units

20-year guarantee on Korniche lanterns and frames

ConfigurationsFlat, Lantern, Walk-on, Opening
FrameThermally Broken Aluminium
GlassSelf-cleaning, Solar Control
GuaranteeUp to 20 years
Gallery
Interior view of a glazed roof lantern over an open-plan kitchen
Pair of pitched glass roof lanterns on a flat-roof extension
Glazed roof lantern flooding a rear extension with natural light
Common Questions

Frequently Asked Questions

What is the difference between a flat roof light and a lantern?+
A flat roof light is a single pane of glass set flush with the roof line — clean, minimal, and ideal for contemporary extensions. A lantern is a pyramid-shaped glazed structure that sits proud of the roof, suitable for traditional and Edwardian-style spaces. Lanterns let in more light per square metre of roof opening.
Can roof lights be opened?+
Yes. We supply electric opening roof lights with rain sensors that close the unit automatically if it starts to rain. Opening configurations are popular over kitchens for ventilation and over en-suites where steam needs to escape.
Are walk-on roof lights safe?+
Walk-on glass uses laminated, toughened safety glass rated for residential pedestrian load. They're typically used as light wells over basement spaces or as terrace inserts above lower-floor rooms. Each unit is engineered for its specific span and load.
How thermally efficient are roof lights?+
Our roof lights use thermally broken aluminium frames and double or triple-glazed units with low-E coatings. Korniche and Atlas systems achieve U-values that comfortably meet Building Regulations Document L, and solar-control glass options reduce summer heat gain.
Do roof lights need planning permission?+
Most roof light installations on existing roofs fall under permitted development and don't need planning permission, provided they don't protrude more than 150mm above the roof slope. Listed buildings and conservation areas are an exception — we can advise during the survey.
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Request a Consultation

Contact our team for a no-obligation consultation. We offer site surveys and expert advice across Liverpool and the North West.

Request a ConsultationCall 0151 428 3244
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