What do roof lanterns in Seaford involve?
For Seaford homes and buildings we offer roof lanterns: hipped glass lanterns that lift the ceiling of orangeries and extensions. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Period cottages and conservation-area streets are common in the South East, so slim conservation rooflights are often the right choice. In Seaford, as anywhere, roof lanterns are the usual choice for orangeries, kitchen-diners and single-storey extensions.
Seaford sits about 12 km from Rottingdean and 13 km from Eastbourne, and we cover the whole BN25 postcode district and the roads in between.
Specification options
- Internal and external colours
- LED lighting in the plaster box
- Rectangular, square or bespoke sizes
- Opening vents with electric control
- Aluminium or uPVC systems
- Slim aluminium bars, more glass
- Adds visual height to a single-storey room
What to check first
- Some designs project above the roof enough to affect planning on certain houses
- Needs a strong, level kerb or upstand
Do you need permission in Seaford?
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
Our planning guide covers each nation in more detail.
What do roof lanterns cost in Seaford?
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
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Seaford address.
- Measure and check. A surveyor visits Seaford, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Nearby towns
Other services in Seaford
Roof lanterns in Seaford: 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.
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 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.
Will I need planning permission in Seaford?
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof.
Can you work alongside my builder in Seaford?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
