Large roof lanterns in Greenwich
We supply large roof lanterns to Greenwich (SE10) and the rest of Greater London: 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 Greenwich
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Large roof lanterns for Greenwich homes
Lanterns of three metres and more for open-plan extensions, with intermediate rafters.
On the shortest day Greenwich gets about 7h 50m of daylight, with the sun only 15.1° above the horizon at noon. Light from the sky overhead is the brightest available in winter, which is exactly what a roof lantern collects.
- Fitting can be quoted on request
- Approximate weight given with your quote
- Delivered as a frame kit with glass
Delivery and fitting in Greenwich
Your quote includes delivery to Greenwich at a confirmed price, usually to the kerbside or driveway on pallets.
Fitting in Greenwich can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to SE10 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Large roof lantern prices for Greenwich
Typical guide prices for large roof lanterns, supply only and including VAT:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1500 × 3000 mm | 4.50 m² | £2,595–£2,995£2,162 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 Greenwich
England's Approved Document L caps the U-value of new or replacement rooflights in existing homes at 2.2 W/m²K, calculated with the glass horizontal.
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 Greenwich 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 Greenwich
Does a large lantern need structural calculations?
The roof structure around it usually does. Your engineer or building control body will want the lantern's weight and the opening size.
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.
Is it worth having solar-control glass in Greenwich?
With the midsummer sun about 62.0° high at noon, roof glass in Greenwich gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
Who checks building regulations for a lantern in Greenwich?
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.