Glass links & glass box roofs for Cowbridge: the essentials
For Cowbridge 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.
Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere. In Cowbridge, as anywhere, glass links & glass box roofs are the usual choice for listed and period buildings where the old wall should stay visible.
Cowbridge is around 18 km from Cardiff, and we survey and fit throughout that part of South Glamorgan, including the CF71 district.
Options we can specify in Cowbridge
- Frameless or slim-framed glass
- Heated glass on some systems
- Structural glass beams and fins
- Solar-control and low-iron glass
- Concealed gutters and drainage
- Can include frameless doors
- Keeps period walls on show
What to check first
- Abutments with old masonry need careful weathering
- Thermal performance of large glass areas must be calculated
Planning and building rules for Cowbridge
Welsh householder permitted development (Class C) allows rooflights that project no more than 15 cm and sit no higher than the existing roof — but not in conservation areas, National Parks, AONBs or World Heritage Sites. A side-facing rooflight within 10.5 m of the boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
Welsh Building Regulations expect new or replacement rooflights to reach 2.2 W/m²K and roof windows 1.4 W/m²K or a Band B rating. Wales also has its own overheating rules (Part O) for new homes, in force since November 2022.
Our planning guide covers each nation in more detail.
What do glass links & glass box roofs cost in Cowbridge?
Guide prices for glass links & glass box roofs in Cowbridge 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 |
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.
- Agree the quote. You approve the specification and price before anything is ordered.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
Other services in Cowbridge
Common questions
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.
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.
Do you fit glass links & glass box roofs in Cowbridge?
Yes. We survey and fit glass links & glass box roofs in Cowbridge and across South Glamorgan. Send your postcode and we will offer a survey date when we reply.
How do I book a survey in Cowbridge?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
