Flat rooflights in Harrow
We supply flat rooflights to Harrow (HA1) and the rest of Greater London: sized in millimetres to your upstand, priced up front and delivered on pallets. Fitting can be quoted separately if you need it.
Price a flat rooflight for Harrow
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Flat rooflights for Harrow homes
A single near-flat pane on an upstand: minimal, low and discreet.
At 51.58°N, Harrow 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.
- Very low profile from outside
- Usually cheaper than a lantern
- Sized to your upstand
Delivery and fitting in Harrow
We confirm the delivery cost and date for HA1 on your quote. Lanterns arrive palletised, with the glass packed separately.
Fitting in Harrow can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to HA1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Flat rooflight prices for Harrow
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 Harrow
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 Harrow 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 Harrow
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.
Is it worth having solar-control glass in Harrow?
With the midsummer sun about 61.9° high at noon, roof glass in Harrow gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
Do I need planning permission for a roof lantern in Harrow?
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.