Square roof lanterns in Chiswick
Order square roof lanterns for delivery to Chiswick and nearby Acton and Barnes. Every lantern is checked against your measurements before it is ordered, and the price on your quote is fixed for the specification shown; any extra work is agreed with you first.
Price a square roof lantern for Chiswick
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Square roof lanterns for Chiswick homes
Four triangular panes meeting at a point: a pyramid lantern for square openings.
In midsummer the noon sun stands about 61.9° high over Chiswick, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Four triangular panes to a single apex
- Stock colours or any RAL on request
- No ridge, a neat apex cap instead
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.
Fitting in Chiswick can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to W4 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Square roof lantern prices for Chiswick
Typical guide prices for square roof lanterns, supply only and including VAT:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1000 mm | 1.00 m² | £1,095–£1,295£912 ex VAT from | Configure |
| 1200 × 1200 mm | 1.44 m² | £1,295–£1,495£1,079 ex VAT from | Configure |
| 1500 × 1500 mm | 2.25 m² | £1,595–£1,895£1,329 ex VAT from | Configure |
| 2000 × 2000 mm | 4.00 m² | £2,395–£2,795£1,996 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
In England, building regulations energy guidance sets a limiting U-value of 2.2 W/m²K for new and replacement rooflights in existing homes, measured horizontally.
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 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
Will a square lantern leak at the top?
It should not when it is correctly installed and maintained. The apex is factory-designed to shed water; leaks usually come from the upstand or roof membrane rather than the lantern itself, which is why the upstand detail matters.
Is a pyramid lantern more expensive than a rectangular one?
Per square metre it can cost slightly more, because every pane is a triangle and the apex needs a special joint. The difference is usually small next to the effect of size and glass choice.
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.