Large roof lanterns in St Albans
Looking for a large roof lantern in St Albans? We price it to your kerb size, confirm the fixed price in writing and deliver to AL1 and the surrounding postcodes, ready for your builder to fit or for us to quote fitting.
Price a large roof lantern for St Albans
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Large roof lanterns for St Albans homes
Lanterns of three metres and more for open-plan extensions, with intermediate rafters.
At 51.75°N, St Albans sees roughly 7h 47m of daylight in late December and 16h 41m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Delivered as a frame kit with glass
- Lengths from about three to six metres
- Intermediate rafters carry the larger glass
Delivery and fitting in St Albans
We confirm the delivery cost and date for AL1 on your quote. Lanterns arrive palletised, with the glass packed separately.
Need it fitted? Send your postcode and we will confirm whether we have fitting cover in St Albans before quoting.
Delivery to AL1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Large roof lantern prices for St Albans
Typical guide prices for large roof lanterns, supply only and including VAT:
| 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 St Albans
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 in St Albans 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 St Albans
Do large lanterns overheat a room?
A large area of south-facing glass can make a room warm on sunny days. Solar-control glass, an opening vent and good background ventilation all help. Our guide on overheating explains the options.
What is the biggest roof lantern you can supply?
It depends on the range. Some go to about 6 m by 4 m with intermediate rafters. Send us your kerb size and we will confirm what can be made.
Is it worth having solar-control glass in St Albans?
With the midsummer sun about 61.7° high at noon, roof glass in St Albans gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
How quickly can I get a roof lantern in St Albans?
Stock sizes are typically ready in 5–10 working days, made-to-measure in 3–4 weeks, plus delivery. Your quote gives the date for AL1.