How we approach glass links & glass box roofs in Blackheath
Glass links & glass box roofs in Blackheath means frameless glass links joining old and new buildings. We cover the SE3 district and the rest of Greater London, with a survey before any price is fixed.
Many London roofs are reached only through the house or over neighbouring property, so lifting heavy glass is planned at survey rather than on the day. Glass links & glass box roofs suit listed and period buildings where the old wall should stay visible.
From Blackheath to Greenwich, Catford and Eltham, the same survey-first process applies: measure, specify, fix the price, then fit.
Specification options
- Solar-control and low-iron glass
- Structural glass beams and fins
- Heated glass on some systems
- Frameless or slim-framed glass
- Concealed gutters and drainage
- Can include frameless doors
- Bright circulation space
What to check first
- Thermal performance of large glass areas must be calculated
- Abutments with old masonry need careful weathering
Consents for glass links & glass box roofs in Blackheath
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. 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.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
Read the planning permission guide before you commit to a design.
What do glass links & glass box roofs cost in Blackheath?
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.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
More we do in Blackheath
Common questions
Who designs it?
Your architect, or we produce a survey-based design that the glass manufacturer engineers.
Do glass links need planning permission?
Often, yes — and listed building consent if either building is listed. We can provide drawings and product data for your application.
How long does a link take?
Design and manufacture are the long part. Fitting is often two to five days.
Do I need to be at home for the survey in Blackheath?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Is the survey in Blackheath free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
