Flat rooflights in Finchley
Planning an extension in Finchley? A flat rooflight 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 a flat rooflight for Finchley
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Flat rooflights for Finchley homes
A single near-flat pane on an upstand: minimal, low and discreet.
At 51.6°N, Finchley sees roughly 7h 49m of daylight in late December and 16h 39m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Single glazed unit with a slight fall
- Sized to your upstand
- Minimal, frameless-looking from inside
Delivery and fitting in Finchley
Delivery to N3 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 Finchley before quoting.
Delivery to N3 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Flat rooflight prices for Finchley
Typical guide prices for flat rooflights, supply only and including VAT:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1000 mm | 1.00 m² | £595–£695£496 ex VAT from | Configure |
| 1200 × 1200 mm | 1.44 m² | £695–£845£579 ex VAT from | Configure |
| 1000 × 1500 mm | 1.50 m² | £695–£845£579 ex VAT from | Configure |
| 1500 × 1500 mm | 2.25 m² | £895–£1,095£746 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 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.
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 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
Do flat rooflights leak?
They should not, provided they are installed on a properly flashed upstand with the right fall and the seals are maintained.
Can I walk on a flat rooflight?
Only if it is a walk-on rooflight designed for foot traffic. Standard rooflights are not designed to be walked on.
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.
Who checks building regulations for a lantern in Finchley?
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.