Flat rooflights in Chiswick
Choosing a flat rooflight for a house in Chiswick? Start with the guide prices below, check the planning and building regulations notes for England, then ask for a fixed quote with delivery to W4.
Price a flat rooflight for Chiswick
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Flat rooflights for Chiswick homes
A single near-flat pane on an upstand: minimal, low and discreet.
On the shortest day Chiswick gets about 7h 50m of daylight, with the sun only 15.1° above the horizon at noon. Light from the sky overhead is the brightest available in winter, which is exactly what a roof lantern collects.
- Minimal, frameless-looking from inside
- Very low profile from outside
- Single glazed unit with a slight fall
Delivery and fitting in Chiswick
Delivery to W4 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
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.
Flat rooflight prices for Chiswick
What flat rooflights cost in common sizes (guide, inc VAT, supply only):
| 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 |
| 1000 × 2000 mm | 2.00 m² | £845–£995£704 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 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
Questions from Chiswick
Are flat rooflights cheaper than lanterns?
Usually, size for size. They use one glass unit and a simple frame.
Can a flat rooflight open?
Some ranges offer electric opening versions. Ask for availability for your size.
Do you deliver roof lanterns to Chiswick?
Yes. Delivery to Chiswick (W4) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
Is it worth having solar-control glass in Chiswick?
With the midsummer sun about 61.9° high at noon, roof glass in Chiswick gets strong summer sun. Solar control is recommended for large or south-facing lanterns.