Square roof lanterns in Streatham
Looking for a square roof lantern in Streatham? We price it to your kerb size, confirm the fixed price in writing and deliver to SW16 and the surrounding postcodes, ready for your builder to fit or for us to quote fitting.
Price a square roof lantern for Streatham
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Square roof lanterns for Streatham homes
Four triangular panes meeting at a point: a pyramid lantern for square openings.
On the shortest day Streatham gets about 7h 50m of daylight, with the sun only 15.1° above the horizon at noon. Light from the sky overhead is the brightest available in winter, which is exactly what a roof lantern collects.
- Four triangular panes to a single apex
- Stock colours or any RAL on request
- Strong central focal point from below
Delivery and fitting in Streatham
Your quote includes delivery to Streatham 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 SW16 and quote a fixed price after seeing photos or surveying.
Delivery to SW16 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Square roof lantern prices for Streatham
Guide prices for common square roof lantern sizes, including 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 for Streatham
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.
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 in Streatham 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 Streatham
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.
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.
Who checks building regulations for a lantern in Streatham?
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.
How quickly can I get a roof lantern in Streatham?
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 SW16.