Square roof lanterns in Thetford
Whether your Thetford extension is still on paper or the roof is already on, we can price a square roof lantern to suit it. Standard sizes cost less and arrive sooner; made-to-measure fits a kerb that is already built.
Price a square roof lantern for Thetford
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Square roof lanterns for Thetford homes
Four triangular panes meeting at a point: a pyramid lantern for square openings.
At 52.42°N, Thetford sees roughly 7h 40m of daylight in late December and 16h 49m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Four triangular panes to a single apex
- Square sizes from about one metre
- Stock colours or any RAL on request
Delivery and fitting in Thetford
Your quote includes delivery to Thetford at a confirmed price, usually to the kerbside or driveway on pallets.
Fitting in Thetford can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to IP24 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Square roof lantern prices for Thetford
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 Thetford
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 Thetford 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 Thetford
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.
Will a square lantern leak at the top?
It should not when it is correctly installed and maintained. The apex is factory-designed to shed water; leaks usually come from the upstand or roof membrane rather than the lantern itself, which is why the upstand detail matters.
How quickly can I get a roof lantern in Thetford?
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 IP24.
Who checks building regulations for a lantern in Thetford?
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.