Large roof lanterns in Lancashire

Choosing large roof lanterns in Lancashire

Lanterns of three metres and more for open-plan extensions, with intermediate rafters.

Across Lancashire, the shortest day brings around 7h 25m of daylight and the midsummer sun reaches about 59.7° 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 carry the larger glass
• Lengths from about three to six metres
• Fitting can be quoted on request
• Approximate weight given with your quote

Delivery and fitting in Lancashire

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.

Large roof lantern prices

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

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 Lancashire

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

Large roof lanterns in Lancashire: questions