What do roof lanterns in Carmarthen involve?
We handle roof lanterns across Dyfed, including Carmarthen. In short: hipped glass lanterns that lift the ceiling of orangeries and extensions. 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. Typical uses for roof lanterns include rooms that need height as well as light.
We work across Dyfed, including Carmarthen, and in neighbouring towns such as Llanelli and Ammanford. Access, parking and how the glass reaches the roof are all checked at the survey.
Specification options
- Solar-control or self-cleaning glass
- LED lighting in the plaster box
- Opening vents with electric control
- Rectangular, square or bespoke sizes
- Aluminium or uPVC systems
- Double or triple glazed with solar-control options
- Classic look that suits period and modern homes
What to check first
- Plaster-box depth affects how the lantern looks from below
- Some designs project above the roof enough to affect planning on certain houses
Planning, building control and Carmarthen
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.
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.
Guide prices for Carmarthen
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or bespoke aluminium lantern | £5,995 – £10,795 | £4,995 – £8,995 |
| Mid-size aluminium lantern (2 × 3 m) Typical | £3,955 – £5,995 | £3,295 – £4,995 |
| Small lantern (1 × 2 m) | £2,995 – £3,955 | £2,495 – £3,295 |
What happens next
- Tell us what you have. Send the SA31 postcode, a rough size and a couple of photos.
- 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.
Neighbouring towns
More we do in Carmarthen
Roof lanterns in Carmarthen: questions
Do roof lanterns get hot?
They can in summer if clear glass is used on a south-facing roof. Solar-control glass and an opening vent make a big difference.
Do they leak?
Modern lanterns are sealed systems. Leaks usually trace back to the kerb or roof membrane detail, which we form and check ourselves.
Can a lantern go on an existing extension?
Yes, if the flat roof structure can be opened up and trimmed. We check joists and the roof build-up at survey.
Is the survey in Carmarthen free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
How do I book a survey in Carmarthen?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
