Large roof lanterns in Seaford
We supply large roof lanterns to Seaford (BN25) and the rest of East Sussex: sized in millimetres to your upstand, priced up front and delivered on pallets. Fitting can be quoted separately if you need it.
Price a large roof lantern for Seaford
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Large roof lanterns for Seaford homes
Lanterns of three metres and more for open-plan extensions, with intermediate rafters.
Winter daylight in Seaford lasts about 7h 57m, against 16h 30m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Intermediate rafters carry the larger glass
- Solar-control glass recommended
- Lengths from about three to six metres
Delivery and fitting in Seaford
Delivery to BN25 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Need it fitted? Send your postcode and we will confirm whether we have fitting cover in Seaford before quoting.
Delivery to BN25 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Large roof lantern prices for Seaford
What large roof lanterns cost in common sizes (guide, inc VAT, supply only):
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 2000 × 3000 mm | 6.00 m² | £3,195–£3,695£2,662 ex VAT from | Configure |
| 2000 × 4000 mm | 8.00 m² | £4,095–£4,795£3,412 ex VAT from | Configure |
| 2500 × 4000 mm | 10.00 m² | £4,895–£5,695£4,079 ex VAT from | Configure |
| 3000 × 4000 mm | 12.00 m² | £5,695–£6,595£4,746 ex VAT from | Configure |
Guide prices include VAT at 20%, supply only, aluminium with self-cleaning double glazing in a stock colour. Your fixed price is confirmed in writing on your quote before you order.
Planning and building regulations for Seaford
For homes in England, a new or replacement rooflight should achieve a U-value of 2.2 W/m²K or better in the horizontal position, under Approved Document L.
Lanterns on permitted development extensions are part of the extension's height limits. Adding one to an existing roof is different: over 150 mm of projection can mean a planning application.
Building regulations in Seaford are checked by your local authority building control team or a registered building control approver. Replacing a rooflight in an existing home is building work. Installers registered with a competent person scheme can self-certify; otherwise building control must be involved.
Sources: Approved Document L, GOV.UK · Planning Portal
Questions from Seaford
Do large lanterns overheat a room?
A large area of south-facing glass can make a room warm on sunny days. Solar-control glass, an opening vent and good background ventilation all help. Our guide on overheating explains the options.
What is the biggest roof lantern you can supply?
It depends on the range. Some go to about 6 m by 4 m with intermediate rafters. Send us your kerb size and we will confirm what can be made.
Who checks building regulations for a lantern in Seaford?
Your local authority building control team or a registered building control approver. For a lantern in a new extension it forms part of the extension's approval; replacements in existing homes have their own rules.
Is it worth having solar-control glass in Seaford?
With the midsummer sun about 62.7° high at noon, roof glass in Seaford gets strong summer sun. Solar control is recommended for large or south-facing lanterns.