What do glass links & glass box roofs in Finchley involve?
For Finchley homes and buildings we offer glass links & glass box roofs: frameless glass links joining old and new buildings. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. Glass links & glass box roofs suit joining a period house to a new extension or annexe.
We work across Greater London, including Finchley, and in neighbouring towns such as Muswell Hill and Highgate. Access, parking and how the glass reaches the roof are all checked at the survey.
Options we can specify in Finchley
- Concealed gutters and drainage
- Solar-control and low-iron glass
- Structural glass beams and fins
- Frameless sliding or pivot doors
- Heated glass on some systems
- Bright circulation space
- Visually light connection between buildings
Things we check at survey
- Structural calculations are part of the design
- Thermal performance of large glass areas must be calculated
Consents for glass links & glass box roofs in Finchley
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. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. The Future Homes and Buildings Standards, published in March 2026, apply from 24 March 2027 and keep the 2.2 W/m²K limit for rooflights.
Our planning guide covers each nation in more detail.
What do glass links & glass box roofs cost in Finchley?
These are typical supply-and-fit ranges. For an address in Finchley, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| 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
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Finchley address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Glass links & glass box roofs near Finchley
Related work in Finchley
Questions about glass links & glass box roofs in Finchley
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.
Who designs it?
Your architect, or we produce a survey-based design that the glass manufacturer engineers.
How is the glass joined to the old wall?
Usually by a slim channel or flashing set into the masonry, sealed and weathered so the old wall can move without cracking the glass seal.
Can you work alongside my builder in Finchley?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Is the survey in Finchley free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
