Contemporary roof lanterns in Isleworth
Planning an extension in Isleworth? A contemporary roof lantern is one of the quickest ways to bring daylight into the middle of the room. Use the configurator for a guide price, then send your kerb size for a fixed quote and delivery date.
Price a contemporary roof lantern for Isleworth
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Contemporary roof lanterns for Isleworth homes
Slim frames, fewer bars and a lower profile for a cleaner view of the sky.
At 51.48°N, Isleworth sees roughly 7h 50m of daylight in late December and 16h 38m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Ideal for modern rendered extensions
- More sky, less frame from inside
- Slim profile suits anthracite and black
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.
If you would like us to fit it, we will check fitting cover for TW7 and quote a fixed price after seeing photos or surveying.
Delivery to TW7 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Contemporary roof lantern prices for Isleworth
What contemporary roof lanterns cost in common sizes (guide, inc VAT, supply only):
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,395–£1,695£1,162 ex VAT from | Configure |
| 1500 × 2500 mm | 3.75 m² | £2,495–£2,895£2,079 ex VAT from | Configure |
| 2000 × 3000 mm | 6.00 m² | £3,495–£4,095£2,912 ex VAT from | Configure |
| 2000 × 4000 mm | 8.00 m² | £4,395–£5,095£3,662 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.
Planning-wise, a lantern on a new extension is judged as part of that extension, while one added to an existing roof can fall outside permitted development if it stands more than 150 mm proud.
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
Do contemporary lanterns cost more?
Usually a little more per size than a standard range, because the bigger glass units cost more to make and handle.
Are contemporary lanterns weaker?
They are engineered for the sizes they are sold in. That is exactly why their maximum sizes are often smaller: the frame is slimmer, so each range has its own limits.
Do I need planning permission for a roof lantern in Isleworth?
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.
How quickly can I get a roof lantern in Isleworth?
Stock sizes are typically ready in 5–10 working days, made-to-measure in 3–4 weeks, plus delivery. Your quote gives the date for TW7.