What do glass links & glass box roofs in Ystradgynlais involve?
We handle glass links & glass box roofs across Powys, including Ystradgynlais. In short: frameless glass links joining old and new buildings. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Welsh planning rules exclude rooflights from permitted development in conservation areas and National Parks, so we check the designation before quoting. Glass links & glass box roofs suit listed and period buildings where the old wall should stay visible.
Neighbouring towns include Pontardawe (8 km) and Neath (12 km). We offer a survey date when we reply to your enquiry.
What you can choose
- Frameless sliding or pivot doors
- Solar-control and low-iron glass
- Frameless or slim-framed glass
- Heated glass on some systems
- Structural glass beams and fins
- Visually light connection between buildings
- Designed around the existing building
What to check first
- Structural calculations are part of the design
- Listed building consent or planning permission is commonly needed
Planning and building rules for Ystradgynlais
Planning rules in Wales are tighter than in England for rooflights: Class C rights do not apply in conservation areas, National Parks or AONBs, so a rooflight there needs planning permission. 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.
In Wales the limiting values are 2.2 W/m²K for a rooflight and 1.4 W/m²K (or WER Band B) for a roof window in an existing house. Wales also has its own overheating rules (Part O) for new homes, in force since November 2022.
Read the planning permission guide before you commit to a design.
What do glass links & glass box roofs cost in Ystradgynlais?
Prices below are shown including and excluding VAT. In Ystradgynlais, 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 |
From enquiry to finished job
- Tell us what you have. Send the SA9 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Ystradgynlais, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Nearby towns
More we do in Ystradgynlais
Common questions
How long does a link take?
Design and manufacture are the long part. Fitting is often two to five days.
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 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.
Will I need planning permission in Ystradgynlais?
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.
How do I book a survey in Ystradgynlais?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
