Opening roof lanterns in Portsmouth
Buy opening roof lanterns for homes in Portsmouth and across Hampshire. Choose a standard size or have one made to your kerb, see a guide price straight away, then get a fixed written quote with delivery to your PO1 address.
Price an opening roof lantern for Portsmouth
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Opening roof lanterns for Portsmouth homes
Electric opening vents to let warm air out at the highest point of the room.
At 50.8°N, Portsmouth sees roughly 7h 57m of daylight in late December and 16h 31m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Helps keep kitchens cool in summer
- One or two vents depending on size
- Electric vents at the room's highest point
Delivery and fitting in Portsmouth
Delivery to PO1 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 PO1 and quote a fixed price after seeing photos or surveying.
Delivery to PO1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Opening roof lantern prices for Portsmouth
Guide prices for common opening roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1500 × 2000 mm | 3.00 m² | £2,690–£2,990£2,242 ex VAT from | Configure |
| 1500 × 2500 mm | 3.75 m² | £2,990–£3,390£2,492 ex VAT from | Configure |
| 2000 × 3000 mm | 6.00 m² | £3,890–£4,390£3,242 ex VAT from | Configure |
| 2000 × 4000 mm | 8.00 m² | £4,790–£5,490£3,992 ex VAT from | Configure |
Guide prices include VAT at 20%, supply only, aluminium with self-cleaning double glazing in a stock colour, including one electric vent. Your fixed price is confirmed in writing on your quote before you order.
Planning and building regulations for Portsmouth
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.
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 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
Can I have a manual opening vent?
Manual vents are rare on lanterns because they are out of reach. Electric operation is standard.
Can a vent be added later?
Usually not to an existing fixed lantern. Decide before ordering.
Who checks building regulations for a lantern in Portsmouth?
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.
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.