Roof Lanterns in Windsor (SL4) | Buy Roof Lanterns

Roof lanterns in Windsor

Planning an extension in Windsor? A roof lantern is one of the quickest ways to bring daylight into the middle of the room. Use the configurator for a guide price, then send your kerb size for a fixed quote and delivery date.

Postcode districtSL4

AreaBerkshire

Shortest-day daylight7h 50m

Midsummer noon sun62.0°

Daylight in Windsor

At 51.48°N, Windsor 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 Windsor

We confirm the delivery cost and date for SL4 on your quote. Lanterns arrive palletised, with the glass packed separately.

Fitting in Windsor can be quoted on request by installers working under S&K, subject to cover for your postcode.

Delivery to SL4 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.

Guide prices for Windsor

Rectangular aluminium lanterns, supply only, including VAT:

Guide prices for Windsor
Kerb size	Roof area	Guide price	Configure
1200 × 1200 mm	1.44 m²	£1,295–£1,495£1,079 ex VAT from	Configure
1500 × 2000 mm	3.00 m²	£1,995–£2,295£1,662 ex VAT from	Configure
1500 × 2500 mm	3.75 m²	£2,295–£2,695£1,912 ex VAT from	Configure
2000 × 3000 mm	6.00 m²	£3,195–£3,695£2,662 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

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.

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

Roof lantern questions from Windsor

Who checks building regulations for a lantern in Windsor?

Your local authority building control team or a registered building control approver. For a lantern in a new extension it forms part of the extension's approval; replacements in existing homes have their own rules.

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.

Can you fit a roof lantern in Windsor?

We can quote for fitting where we have cover. Send your postcode and photos of the roof and kerb, and we will confirm before quoting.

Do I need planning permission for a roof lantern in Windsor?

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.