Square roof lanterns in Cornwall
Buy square roof lanterns for homes and building projects anywhere in Cornwall. See guide prices below, then get a fixed written quote for your size, glass and colours.
Get a price in Cornwall
Send your postcode and kerb size for a fixed written quote.
Choosing square roof lanterns in Cornwall
Four triangular panes meeting at a point: a pyramid lantern for square openings.
Across Cornwall, the shortest day brings around 8h 01m of daylight and the midsummer sun reaches about 63.1° at noon. A lantern collects light from the bright overhead sky all year, and the right glass keeps the long summer days comfortable.
- Four triangular panes to a single apex
- Strong central focal point from below
- Ideal over a table, island or hallway
- Stock colours or any RAL on request
Delivery and fitting in Cornwall
Delivery to mainland addresses here is quoted for your postcode and confirmed in writing before you order.
Fitting can be quoted where we have cover; send your postcode and photos of the roof and kerb and we will confirm before quoting.
Square roof lantern prices
What square roof lanterns cost in common sizes (guide, inc VAT, supply only):
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1000 mm | 1.00 m² | £1,095–£1,295£912 ex VAT from | Configure |
| 1200 × 1200 mm | 1.44 m² | £1,295–£1,495£1,079 ex VAT from | Configure |
| 1500 × 1500 mm | 2.25 m² | £1,595–£1,895£1,329 ex VAT from | Configure |
| 2000 × 2000 mm | 4.00 m² | £2,395–£2,795£1,996 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 in Cornwall
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.
On a permitted development extension the lantern counts towards the extension's height; on an existing roof, a rooflight projecting more than 150 mm may need planning permission.
Building regulations 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
Square roof lanterns in Cornwall: questions
Can I have an opening vent in a pyramid lantern?
Some ranges can fit a vent in one of the triangular panes, others cannot. We will tell you on the quote whether your chosen range allows it.
Will a square lantern leak at the top?
It should not when it is correctly installed and maintained. The apex is factory-designed to shed water; leaks usually come from the upstand or roof membrane rather than the lantern itself, which is why the upstand detail matters.
What is the largest square lantern?
Ranges differ. Many go to around 3 m square, with extra hip bars on larger sizes. Tell us your kerb size and we will confirm which ranges can make it.
Who checks building regulations for a lantern in Cornwall?
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.
Square roof lanterns by town in Cornwall
- Square roof lanterns in Bodmin
- Square roof lanterns in Camborne
- Square roof lanterns in Falmouth
- Square roof lanterns in Launceston
- Square roof lanterns in Liskeard
- Square roof lanterns in Newquay
- Square roof lanterns in Penzance
- Square roof lanterns in Redruth
- Square roof lanterns in Saltash
- Square roof lanterns in St Austell
- Square roof lanterns in Truro