Square roof lanterns in Portsmouth
Buy square 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 a square roof lantern for Portsmouth
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Square roof lanterns for Portsmouth homes
Four triangular panes meeting at a point: a pyramid lantern for square openings.
Winter daylight in Portsmouth lasts about 7h 57m, against 16h 31m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Stock colours or any RAL on request
- Square sizes from about one metre
- Strong central focal point from below
Delivery and fitting in Portsmouth
Your quote includes delivery to Portsmouth at a confirmed price, usually to the kerbside or driveway on pallets.
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.
Square roof lantern prices for Portsmouth
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 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.
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 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 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.
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.
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.
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.