Square roof lanterns in Swanley
Choosing a square roof lantern for a house in Swanley? Start with the guide prices below, check the planning and building regulations notes for England, then ask for a fixed quote with delivery to BR8.
Price a square roof lantern for Swanley
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Square roof lanterns for Swanley homes
Four triangular panes meeting at a point: a pyramid lantern for square openings.
In midsummer the noon sun stands about 62.0° high over Swanley, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Ideal over a table, island or hallway
- No ridge, a neat apex cap instead
- Strong central focal point from below
Delivery and fitting in Swanley
Delivery to BR8 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
If you would like us to fit it, we will check fitting cover for BR8 and quote a fixed price after seeing photos or surveying.
Delivery to BR8 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Square roof lantern prices for Swanley
Typical guide prices for square roof lanterns, supply only and including VAT:
| 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 for Swanley
England's Approved Document L caps the U-value of new or replacement rooflights in existing homes at 2.2 W/m²K, calculated with the glass horizontal.
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 Swanley 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 Swanley
Is a pyramid lantern more expensive than a rectangular one?
Per square metre it can cost slightly more, because every pane is a triangle and the apex needs a special joint. The difference is usually small next to the effect of size and glass choice.
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.
Do you deliver roof lanterns to Swanley?
Yes. Delivery to Swanley (BR8) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
Is it worth having solar-control glass in Swanley?
With the midsummer sun about 62.0° high at noon, roof glass in Swanley gets strong summer sun. Solar control is recommended for large or south-facing lanterns.