What do glass links & glass box roofs in Porthmadog involve?
Thinking about glass links & glass box roofs in Porthmadog? The short answer: frameless glass links joining old and new buildings. The longer answer depends on your roof, which is why we survey before we price.
Slate roofs, stone cottages and terraced valleys are typical across Wales, and slim rooflights that sit low in the slates suit them best. Glass links & glass box roofs suit listed and period buildings where the old wall should stay visible.
Neighbouring towns include Pwllheli (19 km) and Caernarfon (25 km). We offer a survey date when we reply to your enquiry.
Options we can specify in Porthmadog
- Structural glass beams and fins
- Frameless sliding or pivot doors
- Solar-control and low-iron glass
- Heated glass on some systems
- Frameless or slim-framed glass
- Bright circulation space
- Designed around the existing building
Before you order: points to check
- Thermal performance of large glass areas must be calculated
- Listed building consent or planning permission is commonly needed
Do you need permission in Porthmadog?
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. 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.
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. 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 Porthmadog?
Guide prices for glass links & glass box roofs in Porthmadog 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.
- 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.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Glass links & glass box roofs near Porthmadog
Related work in Porthmadog
Questions about glass links & glass box roofs in Porthmadog
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.
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.
How long does a link take?
Design and manufacture are the long part. Fitting is often two to five days.
How do I book a survey in Porthmadog?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Will I need planning permission in Porthmadog?
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.
