Glass links & glass box roofs in Barnet: what is involved?
Glass links & glass box roofs in Barnet means frameless glass links joining old and new buildings. We cover the EN5 district and the rest of Greater London, with a survey before any price is fixed.
London homes often run deep from front to back, so the middle of the ground floor is the darkest space — exactly where an overhead rooflight earns its keep. Typical uses for glass links & glass box roofs include joining a period house to a new extension or annexe.
We work across Greater London, including Barnet, and in neighbouring towns such as Potters Bar and Borehamwood. Access, parking and how the glass reaches the roof are all checked at the survey.
Specification options
- Frameless or slim-framed glass
- Structural glass beams and fins
- Concealed gutters and drainage
- Heated glass on some systems
- Frameless sliding or pivot doors
- Structural glass roof with concealed fixings
- Visually light connection between buildings
What to check first
- Thermal performance of large glass areas must be calculated
- Structural calculations are part of the design
Planning, building control and Barnet
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
See our building regulations guide for U-values, glazing limits and self-certification.
Glass links & glass box roofs prices in Barnet
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Fully frameless link with glass beams | £20,395 – £35,995 | £16,995 – £29,995 |
| Glass roof and glazed sides Typical | £13,195 – £20,395 | £10,995 – £16,995 |
| Glass roof between existing walls | £9,595 – £13,195 | £7,995 – £10,995 |
What happens next
- Send the details. Postcode, rough size and a photo of the roof and room.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Nearby towns
Related work in Barnet
Glass links & glass box roofs in Barnet: questions
Can a glass link be warm enough to use all year?
With insulated glass units, solar control and good detailing, yes — though it will always be brighter and more exposed to temperature swings than a solid room.
Is structural glass safe?
Structural glass is laminated so it stays in place if a ply breaks. The manufacturer designs it for the loads involved.
How long does a link take?
Design and manufacture are the long part. Fitting is often two to five days.
Can you work alongside my builder in Barnet?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do I need to be at home for the survey in Barnet?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
