Square roof lanterns in Truro
We supply square roof lanterns to Truro (TR1) and the rest of Cornwall: sized in millimetres to your upstand, priced up front and delivered on pallets. Fitting can be quoted separately if you need it.
Price a square roof lantern for Truro
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Square roof lanterns for Truro homes
Four triangular panes meeting at a point: a pyramid lantern for square openings.
In midsummer the noon sun stands about 63.2° high over Truro, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Strong central focal point from below
- Ideal over a table, island or hallway
- Four triangular panes to a single apex
Delivery and fitting in Truro
We confirm the delivery cost and date for TR1 on your quote. Lanterns arrive palletised, with the glass packed separately.
Fitting in Truro can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to TR1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Square roof lantern prices for Truro
Typical guide prices for square roof lanterns, supply only and including VAT:
| 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 Truro
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 Truro 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 Truro
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.
What is the largest square lantern?
Ranges differ. Many go to around 3 m square, with extra hip bars on larger sizes. Tell us your kerb size and we will confirm which ranges can make it.
Who checks building regulations for a lantern in Truro?
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 Truro?
Yes. Delivery to Truro (TR1) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.