Large roof lanterns in Harpenden
Looking for a large roof lantern in Harpenden? We price it to your kerb size, confirm the fixed price in writing and deliver to AL5 and the surrounding postcodes, ready for your builder to fit or for us to quote fitting.
Price a large roof lantern for Harpenden
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Large roof lanterns for Harpenden homes
Lanterns of three metres and more for open-plan extensions, with intermediate rafters.
At 51.82°N, Harpenden sees roughly 7h 46m of daylight in late December and 16h 42m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Solar-control glass recommended
- Approximate weight given with your quote
- Intermediate rafters carry the larger glass
Delivery and fitting in Harpenden
Delivery to AL5 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Need it fitted? Send your postcode and we will confirm whether we have fitting cover in Harpenden before quoting.
Delivery to AL5 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Large roof lantern prices for Harpenden
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 × 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 |
| 2500 × 4000 mm | 10.00 m² | £4,895–£5,695£4,079 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 Harpenden
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 Harpenden 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 Harpenden
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.
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.
Is it worth having solar-control glass in Harpenden?
With the midsummer sun about 61.6° high at noon, roof glass in Harpenden gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
Do you deliver roof lanterns to Harpenden?
Yes. Delivery to Harpenden (AL5) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.