Rectangular roof lanterns in Welwyn Garden City
Looking for a rectangular roof lantern in Welwyn Garden City? We price it to your kerb size, confirm the fixed price in writing and deliver to AL8 and the surrounding postcodes, ready for your builder to fit or for us to quote fitting.
Price a rectangular roof lantern for Welwyn Garden City
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Rectangular roof lanterns for Welwyn Garden City homes
The classic double-hipped lantern: a ridge, four sloping sides and the most size choice.
Winter daylight in Welwyn Garden City lasts about 7h 46m, against 16h 42m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Stock anthracite, black or white, or any RAL
- The most size options of any lantern shape
- Suits kitchen-diners and rear extensions
Delivery and fitting in Welwyn Garden City
Your quote includes delivery to Welwyn Garden City at a confirmed price, usually to the kerbside or driveway on pallets.
If you would like us to fit it, we will check fitting cover for AL8 and quote a fixed price after seeing photos or surveying.
Delivery to AL8 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Rectangular roof lantern prices for Welwyn Garden City
Guide prices for common rectangular roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | 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 |
| 2000 × 3000 mm | 6.00 m² | £3,195–£3,695£2,662 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 Welwyn Garden City
In England, building regulations energy guidance sets a limiting U-value of 2.2 W/m²K for new and replacement rooflights in existing homes, measured horizontally.
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 Welwyn Garden City 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 Welwyn Garden City
Does a longer lantern need extra support?
Long lanterns use intermediate rafters inside the lantern itself. The roof structure around the opening must be designed to carry the lantern's weight; your builder or engineer sizes the trimmers.
Can a rectangular lantern be made to an exact size?
Yes. Made-to-measure lanterns are built to the external kerb size you give us, usually in 10 mm steps within the range's limits. Made-to-measure takes longer than a stock size and cannot be cancelled once ordered, so measure twice.
Do I need planning permission for a roof lantern in Welwyn Garden City?
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.
Is it worth having solar-control glass in Welwyn Garden City?
With the midsummer sun about 61.6° high at noon, roof glass in Welwyn Garden City gets strong summer sun. Solar control is recommended for large or south-facing lanterns.