Opening roof lanterns in Sevenoaks
From a small lantern over a hallway to a long one above a kitchen island, we quote opening roof lanterns for Sevenoaks homes to the exact kerb size, with glass and colour choices set out clearly before you commit.
Price an opening roof lantern for Sevenoaks
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Opening roof lanterns for Sevenoaks homes
Electric opening vents to let warm air out at the highest point of the room.
Winter daylight in Sevenoaks lasts about 7h 52m, against 16h 36m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Plan the power supply early
- Electric vents at the room's highest point
- One or two vents depending on size
Delivery and fitting in Sevenoaks
Your quote includes delivery to Sevenoaks at a confirmed price, usually to the kerbside or driveway on pallets.
Fitting in Sevenoaks can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to TN13 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Opening roof lantern prices for Sevenoaks
What opening roof lanterns cost in common sizes (guide, inc VAT, supply only):
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,990–£2,190£1,658 ex VAT from | Configure |
| 1000 × 2000 mm | 2.00 m² | £2,190–£2,490£1,825 ex VAT from | Configure |
| 1500 × 2000 mm | 3.00 m² | £2,690–£2,990£2,242 ex VAT from | Configure |
| 1500 × 2500 mm | 3.75 m² | £2,990–£3,390£2,492 ex VAT from | Configure |
Guide prices include VAT at 20%, supply only, aluminium with self-cleaning double glazing in a stock colour, including one electric vent. Your fixed price is confirmed in writing on your quote before you order.
Planning and building regulations for Sevenoaks
In England, building regulations energy guidance sets a limiting U-value of 2.2 W/m²K for new and replacement rooflights in existing homes, measured horizontally.
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 Sevenoaks 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 Sevenoaks
What happens if it rains while the vent is open?
With a rain sensor the vent closes automatically. Without one it stays where you left it, so a sensor is worth having.
Can I have a manual opening vent?
Manual vents are rare on lanterns because they are out of reach. Electric operation is standard.
Who checks building regulations for a lantern in Sevenoaks?
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 Sevenoaks?
With the midsummer sun about 62.2° high at noon, roof glass in Sevenoaks gets strong summer sun. Solar control is recommended for large or south-facing lanterns.