Large roof lanterns in Streatham
Looking for a large roof lantern in Streatham? We price it to your kerb size, confirm the fixed price in writing and deliver to SW16 and the surrounding postcodes, ready for your builder to fit or for us to quote fitting.
Price a large roof lantern for Streatham
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Large roof lanterns for Streatham homes
Lanterns of three metres and more for open-plan extensions, with intermediate rafters.
At 51.43°N, Streatham sees roughly 7h 50m of daylight in late December and 16h 37m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Delivered as a frame kit with glass
- Fitting can be quoted on request
- Solar-control glass recommended
Delivery and fitting in Streatham
Delivery to SW16 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Fitting in Streatham can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to SW16 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Large roof lantern prices for Streatham
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 × 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 |
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 Streatham
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.
On a permitted development extension the lantern counts towards the extension's height; on an existing roof, a rooflight projecting more than 150 mm may need planning permission.
Building regulations in Streatham 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 Streatham
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.
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.
Do you deliver roof lanterns to Streatham?
Yes. Delivery to Streatham (SW16) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
Who checks building regulations for a lantern in Streatham?
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.