Opening roof lanterns in Chalfont St Peter
Planning an extension in Chalfont St Peter? An opening roof lantern is one of the quickest ways to bring daylight into the middle of the room. Use the configurator for a guide price, then send your kerb size for a fixed quote and delivery date.
Price an opening roof lantern for Chalfont St Peter
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Opening roof lanterns for Chalfont St Peter homes
Electric opening vents to let warm air out at the highest point of the room.
At 51.61°N, Chalfont St Peter sees roughly 7h 48m of daylight in late December and 16h 40m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Switch or remote control
- Plan the power supply early
- Rain sensor closes it automatically
Delivery and fitting in Chalfont St Peter
Delivery to SL9 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Need it fitted? Send your postcode and we will confirm whether we have fitting cover in Chalfont St Peter before quoting.
Delivery to SL9 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Opening roof lantern prices for Chalfont St Peter
Guide prices for common opening roof lantern sizes, including 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 |
| 1500 × 2500 mm | 3.75 m² | £2,990–£3,390£2,492 ex VAT from | Configure |
| 2000 × 3000 mm | 6.00 m² | £3,890–£4,390£3,242 ex VAT from | Configure |
| 2000 × 4000 mm | 8.00 m² | £4,790–£5,490£3,992 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 Chalfont St Peter
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.
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 Chalfont St Peter 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 Chalfont St Peter
Can a vent be added later?
Usually not to an existing fixed lantern. Decide before ordering.
Can I have a manual opening vent?
Manual vents are rare on lanterns because they are out of reach. Electric operation is standard.
Do I need planning permission for a roof lantern in Chalfont St Peter?
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.
Who checks building regulations for a lantern in Chalfont St Peter?
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.