Large roof lanterns in Chiswick
From a small lantern over a hallway to a long one above a kitchen island, we quote large roof lanterns for Chiswick homes to the exact kerb size, with glass and colour choices set out clearly before you commit.
Price a large roof lantern for Chiswick
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Large roof lanterns for Chiswick homes
Lanterns of three metres and more for open-plan extensions, with intermediate rafters.
On the shortest day Chiswick 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.
- Intermediate rafters carry the larger glass
- Fitting can be quoted on request
- Approximate weight given with your quote
Delivery and fitting in Chiswick
Delivery to W4 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Fitting in Chiswick can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to W4 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Large roof lantern prices for Chiswick
Typical guide prices for large roof lanterns, supply only and including VAT:
| 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 Chiswick
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 Chiswick 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 Chiswick
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.
Is it worth having solar-control glass in Chiswick?
With the midsummer sun about 61.9° high at noon, roof glass in Chiswick gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
Do I need planning permission for a roof lantern in Chiswick?
Often not, but it depends on the roof, the property and whether it is listed or in a conservation area. Check with your district, borough or unitary council before ordering.