Rectangular roof lanterns in Berkhamsted
Choosing a rectangular roof lantern for a house in Berkhamsted? Start with the guide prices below, check the planning and building regulations notes for England, then ask for a fixed quote with delivery to HP4.
Price a rectangular roof lantern for Berkhamsted
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Rectangular roof lanterns for Berkhamsted homes
The classic double-hipped lantern: a ridge, four sloping sides and the most size choice.
Winter daylight in Berkhamsted lasts about 7h 47m, against 16h 41m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Intermediate rafters added on longer lengths
- Stock anthracite, black or white, or any RAL
- The most size options of any lantern shape
Delivery and fitting in Berkhamsted
Your quote includes delivery to Berkhamsted at a confirmed price, usually to the kerbside or driveway on pallets.
If you would like us to fit it, we will check fitting cover for HP4 and quote a fixed price after seeing photos or surveying.
Delivery to HP4 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Rectangular roof lantern prices for Berkhamsted
Guide prices for common rectangular roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,295–£1,495£1,079 ex VAT from | Configure |
| 1500 × 2500 mm | 3.75 m² | £2,295–£2,695£1,912 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 |
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 Berkhamsted
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 Berkhamsted 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 Berkhamsted
Which way should the ridge run?
The ridge runs along the longer side. On a square opening there is no ridge and the lantern becomes a pyramid.
Does a longer lantern need extra support?
Long lanterns use intermediate rafters inside the lantern itself. The roof structure around the opening must be designed to carry the lantern's weight; your builder or engineer sizes the trimmers.
How quickly can I get a roof lantern in Berkhamsted?
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 HP4.
Is it worth having solar-control glass in Berkhamsted?
With the midsummer sun about 61.7° high at noon, roof glass in Berkhamsted gets strong summer sun. Solar control is recommended for large or south-facing lanterns.