What do glass links & glass box roofs in Thamesmead involve?
We handle glass links & glass box roofs across Greater London, including Thamesmead. In short: frameless glass links joining old and new buildings. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
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.
Thamesmead sits about 4 km from Barking and 5 km from Welling, and we cover the whole SE28 postcode district and the roads in between.
What you can choose
- Frameless or slim-framed glass
- Structural glass beams and fins
- Heated glass on some systems
- Frameless sliding or pivot doors
- Concealed gutters and drainage
- Visually light connection between buildings
- Designed around the existing building
What to check first
- Structural calculations are part of the design
- Abutments with old masonry need careful weathering
Do you need permission in Thamesmead?
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. 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.
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. 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.
What do glass links & glass box roofs cost in Thamesmead?
Prices below are shown including and excluding VAT. In Thamesmead, as elsewhere, making good inside and access equipment are the main variables.
| 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 Thamesmead address.
- Survey. We measure the opening, check the roof build-up and agree the options.
- 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.
Nearby towns
More we do in Thamesmead
Common questions
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.
How long does a link take?
Design and manufacture are the long part. Fitting is often two to five days.
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.
Can you work alongside my builder in Thamesmead?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do you fit glass links & glass box roofs in Thamesmead?
Yes. We survey and fit glass links & glass box roofs in Thamesmead and across Greater London. Send your postcode and we will offer a survey date when we reply.
