Square roof lanterns in Windsor
From a small lantern over a hallway to a long one above a kitchen island, we quote square roof lanterns for Windsor homes to the exact kerb size, with glass and colour choices set out clearly before you commit.
Price a square roof lantern for Windsor
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Square roof lanterns for Windsor homes
Four triangular panes meeting at a point: a pyramid lantern for square openings.
In midsummer the noon sun stands about 62.0° high over Windsor, 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 Windsor
We confirm the delivery cost and date for SL4 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 SL4 and quote a fixed price after seeing photos or surveying.
Delivery to SL4 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Square roof lantern prices for Windsor
Guide prices for common square roof lantern sizes, including VAT, supply only:
| 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 Windsor
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 Windsor 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 Windsor
Can I have an opening vent in a pyramid lantern?
Some ranges can fit a vent in one of the triangular panes, others cannot. We will tell you on the quote whether your chosen range allows it.
What is the largest square lantern?
Ranges differ. Many go to around 3 m square, with extra hip bars on larger sizes. Tell us your kerb size and we will confirm which ranges can make it.
Do you deliver roof lanterns to Windsor?
Yes. Delivery to Windsor (SL4) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
How quickly can I get a roof lantern in Windsor?
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 SL4.