Replacement roof lanterns in Portsmouth
Choosing a replacement roof lantern for a house in Portsmouth? Start with the guide prices below, check the planning and building regulations notes for England, then ask for a fixed quote with delivery to PO1.
Price a replacement roof lantern for Portsmouth
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Replacement roof lanterns for Portsmouth homes
Swap a tired, leaking or polycarbonate lantern for modern double glazing.
On the shortest day Portsmouth gets about 7h 57m of daylight, with the sun only 15.8° above the horizon at noon. Light from the sky overhead is the brightest available in winter, which is exactly what a roof lantern collects.
- Supply only or a fitting quote
- Energy standards for replacements explained
- Replace old polycarbonate with glass
Delivery and fitting in Portsmouth
Your quote includes delivery to Portsmouth at a confirmed price, usually to the kerbside or driveway on pallets.
Fitting in Portsmouth can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to PO1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Replacement roof lantern prices for Portsmouth
Typical guide prices for replacement roof lanterns, supply only and including VAT:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,295–£1,495£1,079 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 |
| 2000 × 4000 mm | 8.00 m² | £4,095–£4,795£3,412 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 Portsmouth
For homes in England, a new or replacement rooflight should achieve a U-value of 2.2 W/m²K or better in the horizontal position, under Approved Document L.
Lanterns on permitted development extensions are part of the extension's height limits. Adding one to an existing roof is different: over 150 mm of projection can mean a planning application.
Building regulations in Portsmouth 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 Portsmouth
Will a new lantern be warmer?
A modern double glazed lantern with a thermally broken frame loses far less heat than polycarbonate.
Can I replace polycarbonate panels with glass?
Usually not in the old frame: glass is much heavier than polycarbonate and the frame was not designed for it. Replacing the whole lantern is the safer route.
Do you deliver roof lanterns to Portsmouth?
Yes. Delivery to Portsmouth (PO1) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
Can you fit a roof lantern in Portsmouth?
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.