Roof lanterns in Chiswick

Daylight in Chiswick

At 51.49°N, Chiswick sees roughly 7h 50m of daylight in late December and 16h 38m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.

Delivery and fitting in Chiswick

We confirm the delivery cost and date for W4 on your quote. Lanterns arrive palletised, with the glass packed separately.

If you would like us to fit it, we will check fitting cover for W4 and quote a fixed price after seeing photos or surveying.

Delivery to W4 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.

Guide prices for Chiswick

Rectangular aluminium lanterns, supply only, including VAT:

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 Chiswick

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.

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 Chiswick 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

Roof lantern questions from Chiswick