Supply-only roof lanterns in Isleworth
Whether your Isleworth extension is still on paper or the roof is already on, we can price a supply-only roof lantern to suit it. Standard sizes cost less and arrive sooner; made-to-measure fits a kerb that is already built.
Price a supply-only roof lantern for Isleworth
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Supply-only roof lanterns for Isleworth homes
Delivered to you or your builder, ready for your own team to fit.
On the shortest day Isleworth 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.
- Priced and ordered to your kerb size
- Fixed price in writing before ordering
- Fitting quote available if needed
Delivery and fitting in Isleworth
Delivery to TW7 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Fitting in Isleworth can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to TW7 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Supply-only roof lantern prices for Isleworth
Guide prices for common supply-only roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,295–£1,495£1,079 ex VAT from | Configure |
| 1000 × 2000 mm | 2.00 m² | £1,495–£1,795£1,246 ex VAT from | Configure |
| 1500 × 2000 mm | 3.00 m² | £1,995–£2,295£1,662 ex VAT from | Configure |
| 1500 × 2500 mm | 3.75 m² | £2,295–£2,695£1,912 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 Isleworth
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 Isleworth 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 Isleworth
Can you deliver to Scotland, Northern Ireland or the islands?
Mainland Britain is standard. The Scottish Highlands, islands and Northern Ireland are by arrangement, with delivery confirmed on your quote.
Do you deliver to building sites?
Yes, to mainland Britain addresses, with Northern Ireland, the Highlands and islands by arrangement. Tell us about access, parking restrictions and whether a forklift or tail lift will be needed.
Who checks building regulations for a lantern in Isleworth?
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.
Can you fit a roof lantern in Isleworth?
We can quote for fitting where we have cover. Send your postcode and photos of the roof and kerb, and we will confirm before quoting.