What do glass links & glass box roofs in Llantwit Major involve?
Our glass links & glass box roofs service in Llantwit Major covers frameless glass links joining old and new buildings. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere. Glass links & glass box roofs suit listed and period buildings where the old wall should stay visible.
Llantwit Major sits about 6 km from Cowbridge and 12 km from Bridgend, and we cover the whole CF61 postcode district and the roads in between.
Specification options
- Frameless sliding or pivot doors
- Solar-control and low-iron glass
- Structural glass beams and fins
- Concealed gutters and drainage
- Heated glass on some systems
- Keeps period walls on show
- Visually light connection between buildings
What to check first
- Structural calculations are part of the design
- Thermal performance of large glass areas must be calculated
Do you need permission in Llantwit Major?
In Wales a rooflight on a house is usually permitted development if it stands no more than 15 cm proud of the roof, except on protected land such as conservation areas and National Parks, where permission is needed. Listed buildings need listed building consent from the council, and flats have no householder permitted development rights.
Approved Document L in Wales (2022 edition) sets 2.2 W/m²K for rooflights, measured horizontally, and 1.4 W/m²K or Band B for roof windows in existing homes. A revised Welsh Approved Document L takes effect on 4 March 2027; rooflights in new dwellings stay at 2.2 W/m²K.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Llantwit Major
Guide prices for glass links & glass box roofs in Llantwit Major are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Llantwit Major, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Glass links & glass box roofs near Llantwit Major
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Glass links & glass box roofs in Llantwit Major: questions
How long does a link take?
Design and manufacture are the long part. Fitting is often two to five days.
Who designs it?
Your architect, or we produce a survey-based design that the glass manufacturer engineers.
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.
Do I need to be at home for the survey in Llantwit Major?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
How do I book a survey in Llantwit Major?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
