Roof glazing
Roof lanterns
- 4–8 weeks from survey to installation
- Own fitters — no subcontracting
- Prices updated 11 October 2026
Typical price ranges
Roof lanterns
Roof lantern
£2,500–£6,500 each
A survey confirms the final figure.
Overview
Why roof lanterns?
A roof lantern is a raised, pyramid-style glazed roof that sits on a flat roof. It floods a kitchen or extension with light from above and adds a feeling of height to the room.
We fit aluminium roof lanterns on new and existing flat roofs, priced as a range for a typical lantern, installed.
Light from above
The brightest way to light the middle of a deep extension.
Added height
The raised glass makes the ceiling feel taller.
Slim aluminium
Narrow glazing bars and a powder-coated finish.
Solar-control glass
Helps reduce glare and summer overheating.
New or existing roofs
Fitted to new extensions or retrofitted where the roof allows.
Prices
What roof lanterns cost
| Product | Typical range, installed |
|---|---|
| Roof lantern | £2,500–£6,500 each |
Indicative ranges for London and the South East, supplied and installed, including VAT. Updated 11 October 2026. A survey confirms your final price.
Styles and options
Made to your specification
Shape and size
- Rectangular or square
- Sized to the roof opening
Glass
- Double or triple glazing
- Solar-control glass
Finish
- Any RAL colour
- Dual colour
Good to know
Planning, regulations and timings
Roof structure
A lantern sits on an insulated upstand. We check the roof joists, covering and upstand at survey, and our building team forms or trims the opening.
Planning and Building Regulations
Because a lantern projects above the roof, adding one to an existing roof can need planning permission, and forming a new opening needs Building Regulations approval. We check at survey.
Survey to installation
Typically 4–8 weeks from survey to installation, agreed with you up front. One named project manager runs your job from survey to sign-off, and our own fitters do the work — we don't subcontract glazing.
Questions
Roof lanterns: your questions answered
How much does a roof lantern cost?
A roof lantern typically costs £2,500–£6,500 installed. Indicative, supplied and installed in London and the South East, including VAT; prices updated 11 October 2026. A survey confirms the final figure.
Roof lantern or flat rooflight?
A lantern adds height and becomes a feature; a flat rooflight is lower-profile and minimal. A bespoke flat rooflight costs £1,800–£5,000.
Will a roof lantern make the room too hot?
It can on south-facing roofs without the right glass. Solar-control glass reduces glare and heat gain, and we'll recommend it where it's needed.
Can a lantern go on my existing flat roof?
Often, yes, if the roof structure can take the opening. We check the joists, covering and drainage at survey.
Keep exploring
Related products and services
Skylights
Pitched and flat skylights that bring daylight deep into the house.
Rooflights
Bespoke fixed and walk-on flat rooflights from Cambridge Skylights.
Glass skylights
Frameless and structural glass skylights for a clean architectural finish.
Brands we install
REHAU, SMART, AluK, Schüco, Cortizo, VELUX, FAKRO and Cambridge Skylights — and the tier each sits in.
Begin your project
Get your price range in under two minutes
Choose your product and brand tier and see a live price range. No obligation, and a survey always confirms the final figure.