Rectangular roof lanterns in St Austell
From a small lantern over a hallway to a long one above a kitchen island, we quote rectangular roof lanterns for St Austell homes to the exact kerb size, with glass and colour choices set out clearly before you commit.
Price a rectangular roof lantern for St Austell
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Rectangular roof lanterns for St Austell homes
The classic double-hipped lantern: a ridge, four sloping sides and the most size choice.
Winter daylight in St Austell lasts about 8h 01m, against 16h 26m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Stock anthracite, black or white, or any RAL
- Intermediate rafters added on longer lengths
- Ridge along the long axis, four glazed slopes
Delivery and fitting in St Austell
We confirm the delivery cost and date for PL25 on your quote. Lanterns arrive palletised, with the glass packed separately.
Fitting in St Austell can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to PL25 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Rectangular roof lantern prices for St Austell
Typical guide prices for rectangular roof lanterns, supply only and including VAT:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 2000 mm | 2.00 m² | £1,495–£1,795£1,246 ex VAT from | Configure |
| 1500 × 2000 mm | 3.00 m² | £1,995–£2,295£1,662 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 |
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 Austell
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 St Austell 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 Austell
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.
What is the most common rectangular roof lantern size?
Sizes of 1000 × 2000 mm and 1500 × 2500 mm are common standard sizes for kitchen and dining extensions, but the right size is the one that matches your kerb. If your kerb is not built yet, our sizes guide helps you pick a standard size first.
Who checks building regulations for a lantern in St Austell?
Your local authority building control team or a registered building control approver. For a lantern in a new extension it forms part of the extension's approval; replacements in existing homes have their own rules.
Is it worth having solar-control glass in St Austell?
With the midsummer sun about 63.1° high at noon, roof glass in St Austell gets strong summer sun. Solar control is recommended for large or south-facing lanterns.