Square roof lanterns in Stevenage
We supply square roof lanterns to Stevenage (SG1) and the rest of Hertfordshire: sized in millimetres to your upstand, priced up front and delivered on pallets. Fitting can be quoted separately if you need it.
Price a square roof lantern for Stevenage
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Square roof lanterns for Stevenage homes
Four triangular panes meeting at a point: a pyramid lantern for square openings.
On the shortest day Stevenage gets about 7h 45m of daylight, with the sun only 14.7° above the horizon at noon. Light from the sky overhead is the brightest available in winter, which is exactly what a roof lantern collects.
- Strong central focal point from below
- No ridge, a neat apex cap instead
- Square sizes from about one metre
Delivery and fitting in Stevenage
We confirm the delivery cost and date for SG1 on your quote. Lanterns arrive palletised, with the glass packed separately.
Fitting in Stevenage can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to SG1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Square roof lantern prices for Stevenage
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 for Stevenage
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.
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 Stevenage 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 Stevenage
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.
Is it worth having solar-control glass in Stevenage?
With the midsummer sun about 61.5° high at noon, roof glass in Stevenage gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
Do I need planning permission for a roof lantern in Stevenage?
Often not, but it depends on the roof, the property and whether it is listed or in a conservation area. Check with your district, borough or unitary council before ordering.