England · Rectangular

Rectangular roof lanterns in Kent

We supply rectangular roof lanterns across Kent, from Maidstone to the smaller towns, priced to your kerb size and delivered to your site.

AreaKent

NationEngland

Towns listed23

Guide price from£1,295

Configure and price Call 0800 088 6248

Get a price in Kent

Send your postcode and kerb size for a fixed written quote.

Choosing rectangular roof lanterns in Kent

The classic double-hipped lantern: a ridge, four sloping sides and the most size choice.

Across Kent, the shortest day brings around 7h 52m of daylight and the midsummer sun reaches about 62.1° at noon. A lantern collects light from the bright overhead sky all year, and the right glass keeps the long summer days comfortable.

Intermediate rafters added on longer lengths
Stock anthracite, black or white, or any RAL
Standard sizes or made to your kerb
Ridge along the long axis, four glazed slopes

Delivery and fitting in Kent

Delivery to mainland addresses here is quoted for your postcode and confirmed in writing before you order.

Fitting can be quoted where we have cover; send your postcode and photos of the roof and kerb and we will confirm before quoting.

Rectangular roof lantern prices

Typical guide prices for rectangular roof lanterns, supply only and including VAT:

Rectangular roof lantern prices
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
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

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 in Kent

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.

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 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

Rectangular roof lanterns in Kent: questions

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.

What is the most common rectangular roof lantern size?

Sizes of 1000 × 2000 mm and 1500 × 2500 mm are common standard sizes for kitchen and dining extensions, but the right size is the one that matches your kerb. If your kerb is not built yet, our sizes guide helps you pick a standard size first.

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 Kent?

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.