Conservatories
Roof lanterns
A pyramid of glass in a flat roof. Slim aluminium rafters, sky overhead and daylight in the part of the room that windows never reach.
Garden rooms
The quickest way to transform a flat roof
A deep extension can be gloomy in the middle. A roof lantern solves that from above: a glazed, pitched structure that sits on an upstand in the flat roof and draws light down into the centre of the plan. Over a kitchen island or a dining table it becomes the feature of the room.
We supply and fit Sheerline lanterns, made from thermally broken aluminium with notably slim rafters and a discreet ridge, so what you see is sky rather than framework.
Daylight where you need it
Top light reaches the middle of deep rooms.
Slim sightlines
Fine aluminium rafters and a concealed ridge keep the view clear.
Thermally broken
Insulating barriers in every bar reduce heat loss and condensation.
Colour inside and out
Anthracite, black or white, or a dark exterior with a white interior.
Sizing and glazing
As a rule of thumb, a lantern looks best when it is centred on something: the island, the table or the doors. We will help you size it so that it is generous without overwhelming the ceiling, and confirm the upstand your builder needs to form.
Glass options include solar-control units to limit summer heat, easy-clean coatings and neutral or blue tints. For the best insulation, units can be specified with a centre-pane U-value as low as 1.0 W/m²K.
- Made to measure in rectangular and square formats
- Solar-control, self-cleaning glass options
- Supplied with or without fitting
- Matches Sheerline bifold doors and aluminium windows
Specification
The details, in full
Typical specification. We confirm the exact details for your order on the quotation.
| System | Sheerline thermally broken aluminium roof lantern |
|---|---|
| Glazing | Toughened double glazing; solar-control and self-cleaning options |
| Colours | Anthracite Grey, Black or White; dual colour available |
| Fits | Flat roofs with a prepared timber or insulated upstand |
| Supply | Supply only for builders, or supplied and fitted |
| Guarantee | 10 years on frames, 5 years on sealed units, 2 years on hardware |
Questions
Good things to ask
Straight answers to the questions we hear most about this product.
Will a roof lantern make the room too hot?
Solar-control glass reflects a large proportion of the sun's heat while letting daylight through. On a south-facing roof we would always recommend it.
Can a lantern be fitted to an existing flat roof?
Yes. An opening is formed between the joists, trimmed and built up with an insulated upstand, and the roof covering is dressed up to it. The joinery and roofing are a job for a builder or roofer; we can supply the lantern to them or work alongside them.
Do roof lanterns leak?
A well-made lantern on a properly formed upstand does not. Problems are almost always down to poor flashing at the base. We give your builder the exact upstand dimensions and details before the lantern is made.
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Get a price for roof lanterns
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