Triple glazed roof lanterns in Finchley
Choosing a triple glazed roof lantern for a house in Finchley? Start with the guide prices below, check the planning and building regulations notes for England, then ask for a fixed quote with delivery to N3.
Price a triple glazed roof lantern for Finchley
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Triple glazed roof lanterns for Finchley homes
Three panes for lower heat loss, a warmer inner surface and less noise.
Winter daylight in Finchley lasts about 7h 49m, against 16h 39m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Quieter in heavy rain
- Ideal for colder, exposed locations
- Warmer inner pane, less condensation risk
Delivery and fitting in Finchley
Your quote includes delivery to Finchley 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 N3 and quote a fixed price after seeing photos or surveying.
Delivery to N3 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Triple glazed roof lantern prices for Finchley
Guide prices for common triple glazed roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,795–£2,095£1,496 ex VAT from | Configure |
| 1500 × 2500 mm | 3.75 m² | £3,095–£3,595£2,579 ex VAT from | Configure |
| 2000 × 3000 mm | 6.00 m² | £4,395–£5,095£3,662 ex VAT from | Configure |
| 2000 × 4000 mm | 8.00 m² | £5,595–£6,495£4,662 ex VAT from | Configure |
Guide prices include VAT at 20%, supply only, aluminium with triple glazing in a stock colour. Your fixed price is confirmed in writing on your quote before you order.
Planning and building regulations for Finchley
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 Finchley 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 Finchley
Is triple glazing heavier to lift?
Yes, the glass is roughly 45% heavier. Plan for extra hands or lifting equipment on larger lanterns.
Do I need triple glazing to meet building regulations?
Not usually. Well-specified double glazed lanterns generally meet the limiting values for rooflights. Triple glazing is an upgrade, not normally a requirement. Your building control body can confirm for your project.
How quickly can I get a roof lantern in Finchley?
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 N3.
Do I need planning permission for a roof lantern in Finchley?
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.