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England · Flat rooflights

Flat rooflights in Hertfordshire

Whether you are in Watford or elsewhere in Hertfordshire, the process is the same: configure your lantern, get a guide price, then a fixed quote and a delivery date.

AreaHertfordshire
NationEngland
Towns listed18
Guide price from£595
Configure and priceCall 0800 088 6248

Get a price in Hertfordshire

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

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Choosing flat rooflights in Hertfordshire

A single near-flat pane on an upstand: minimal, low and discreet.

Across Hertfordshire, the shortest day brings around 7h 47m of daylight and the midsummer sun reaches about 61.7° at noon. A lantern collects light from the bright overhead sky all year, and the right glass keeps the long summer days comfortable.

  • Very low profile from outside
  • Fixed or electric opening versions
  • Usually cheaper than a lantern
  • Single glazed unit with a slight fall

Delivery and fitting in Hertfordshire

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.

Flat rooflight prices

What flat rooflights cost in common sizes (guide, inc VAT, supply only):

Flat rooflight prices
Kerb sizeRoof areaGuide priceConfigure
1000 × 1000 mm1.00 m²£595–£695£496 ex VAT fromConfigure
1200 × 1200 mm1.44 m²£695–£845£579 ex VAT fromConfigure
1000 × 1500 mm1.50 m²£695–£845£579 ex VAT fromConfigure
1000 × 2000 mm2.00 m²£845–£995£704 ex VAT fromConfigure
1500 × 1500 mm2.25 m²£895–£1,095£746 ex VAT fromConfigure

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 Hertfordshire

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.

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

Flat rooflights in Hertfordshire: questions

Can a flat rooflight open?

Some ranges offer electric opening versions. Ask for availability for your size.

Do flat rooflights leak?

They should not, provided they are installed on a properly flashed upstand with the right fall and the seals are maintained.

Are flat rooflights cheaper than lanterns?

Usually, size for size. They use one glass unit and a simple frame.

Do I need planning permission for a roof lantern in Hertfordshire?

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.

Flat rooflights by town in Hertfordshire

Fixed price in writing

Know the price before you order.

Configure your lantern for a guide price, then get a fixed written quote with delivery to your postcode.

Price my lanternCall 0800 088 6248
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