Roof glazing
Glass skylights
- 4–8 weeks from survey to installation
- Own fitters — no subcontracting
- Prices updated 11 October 2026
Typical price ranges
Glass skylights
Cambridge Skylights bespoke fixed flat rooflight
£1,800–£5,000 each
Walk-on rooflight
£3,000–£8,000 each
A survey confirms the final figure.
Overview
Why glass skylights?
Frameless and structural glass skylights give the cleanest finish there is — glass edge to edge, with the frame hidden in the roof build-up.
We fit them with Cambridge Skylights, including walk-on glass for terraces and lightwells. Prices depend on size and glass specification.
Edge-to-edge glass
No visible frame from inside the room.
Architectural finish
Ideal for contemporary extensions and lightwells.
Walk-on options
Laminated glass designed for foot traffic.
Made to measure
Bespoke sizes for each opening.
Prices
What glass skylights cost
| Product | Typical range, installed |
|---|---|
| Cambridge Skylights bespoke fixed flat rooflight | £1,800–£5,000 each |
| Walk-on rooflight | £3,000–£8,000 each |
Indicative ranges for London and the South East, supplied and installed, including VAT. Updated 11 October 2026. A survey confirms your final price.
Tiers and brands
Which suits your home?
Styles and options
Made to your specification
Types
- Frameless fixed skylights
- Walk-on glass
- Bespoke sizes
Glass
- Double or triple glazing
- Solar-control glass
Good to know
Planning, regulations and timings
Design and structure
Structural glass is specified for the span and loads, and set into an insulated upstand. We check the roof at survey.
Planning permission
Rooflights in a pitched roof are usually permitted development if they don't project more than 150 mm above the roof slope. Listed buildings, conservation areas and front roof slopes facing a road can need consent, and cutting rafters 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
Glass skylights: your questions answered
How much does a glass skylight cost?
A bespoke fixed flat rooflight costs £1,800–£5,000 and a walk-on glass rooflight £3,000–£8,000, installed. Indicative, supplied and installed in London and the South East, including VAT; prices updated 11 October 2026. A survey confirms the final figure.
What's the difference between a frameless skylight and a rooflight?
A frameless skylight hides its frame in the roof build-up so you see only glass from inside; a standard rooflight has a slim visible frame.
Is walk-on glass safe?
Walk-on rooflights use laminated glass designed for foot traffic, so they stay in place even if a pane is damaged.
Can a skylight go over a basement lightwell?
Yes — a walk-on rooflight lets light down to a basement while the space above stays usable.
Keep exploring
Related products and services
Skylights
Pitched and flat skylights that bring daylight deep into the house.
Roof lanterns
Aluminium roof lanterns for flat-roof extensions and kitchens.
Rooflights
Bespoke fixed and walk-on flat rooflights from Cambridge Skylights.
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.