How we approach roof lanterns in Swansea
Our roof lanterns service in Swansea covers hipped glass lanterns that lift the ceiling of orangeries and extensions. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Slate roofs, stone cottages and terraced valleys are typical across Wales, and slim rooflights that sit low in the slates suit them best. In Swansea, as anywhere, roof lanterns are the usual choice for orangeries, kitchen-diners and single-storey extensions.
We cover all of Swansea and the SA1 district, and nearby Briton Ferry and Gorseinon.
What you can choose
- Rectangular, square or bespoke sizes
- Solar-control or self-cleaning glass
- Aluminium or uPVC systems
- Opening vents with electric control
- LED lighting in the plaster box
- Slim aluminium bars, more glass
- Double or triple glazed with solar-control options
Things we check at survey
- Some designs project above the roof enough to affect planning on certain houses
- Larger lanterns may need a steel or timber ring beam
Do you need permission in Swansea?
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. Listed buildings need listed building consent from the council, and flats have no householder permitted development rights.
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.
Read the planning permission guide before you commit to a design.
What do roof lanterns cost in Swansea?
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 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Swansea, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
Other services in Swansea
Common questions
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.
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.
Roof lantern or flat rooflight?
A lantern adds height and sky from all sides; a flat rooflight is lower-profile and cleaner from outside. Our guide compares them in detail.
Do I need to be at home for the survey in Swansea?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Do you fit roof lanterns in Swansea?
Yes. We survey and fit roof lanterns in Swansea and across West Glamorgan. Send your postcode and we will offer a survey date when we reply.
