Large roof lanterns in Lancaster
Whether your Lancaster extension is still on paper or the roof is already on, we can price a large roof lantern to suit it. Standard sizes cost less and arrive sooner; made-to-measure fits a kerb that is already built.
Price a large roof lantern for Lancaster
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Large roof lanterns for Lancaster homes
Lanterns of three metres and more for open-plan extensions, with intermediate rafters.
Winter daylight in Lancaster lasts about 7h 22m, against 17h 09m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Approximate weight given with your quote
- Intermediate rafters carry the larger glass
- Delivered as a frame kit with glass
Delivery and fitting in Lancaster
Delivery to LA1 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 LA1 and quote a fixed price after seeing photos or surveying.
Delivery to LA1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Large roof lantern prices for Lancaster
Guide prices for common large roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1500 × 3000 mm | 4.50 m² | £2,595–£2,995£2,162 ex VAT from | Configure |
| 2000 × 4000 mm | 8.00 m² | £4,095–£4,795£3,412 ex VAT from | Configure |
| 2500 × 4000 mm | 10.00 m² | £4,895–£5,695£4,079 ex VAT from | Configure |
| 3000 × 4000 mm | 12.00 m² | £5,695–£6,595£4,746 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 Lancaster
For homes in England, a new or replacement rooflight should achieve a U-value of 2.2 W/m²K or better in the horizontal position, under Approved Document L.
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 Lancaster 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 Lancaster
How is a large lantern delivered?
On pallets, usually with the frame and glass packed separately. The heaviest single item is normally a glass unit, which needs two or more people to lift safely.
Does a large lantern need structural calculations?
The roof structure around it usually does. Your engineer or building control body will want the lantern's weight and the opening size.
Do you deliver roof lanterns to Lancaster?
Yes. Delivery to Lancaster (LA1) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
Is it worth having solar-control glass in Lancaster?
With the midsummer sun about 59.4° high at noon, roof glass in Lancaster gets strong summer sun. Solar control is recommended for large or south-facing lanterns.