Replacement roof lanterns in Gainsborough
Planning an extension in Gainsborough? A replacement roof lantern is one of the quickest ways to bring daylight into the middle of the room. Use the configurator for a guide price, then send your kerb size for a fixed quote and delivery date.
Price a replacement roof lantern for Gainsborough
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Replacement roof lanterns for Gainsborough homes
Swap a tired, leaking or polycarbonate lantern for modern double glazing.
In midsummer the noon sun stands about 60.1° high over Gainsborough, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Reuse the kerb if sound and to size
- Supply only or a fitting quote
- Warmer, quieter, brighter
Delivery and fitting in Gainsborough
We confirm the delivery cost and date for DN21 on your quote. Lanterns arrive palletised, with the glass packed separately.
Fitting in Gainsborough can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to DN21 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Replacement roof lantern prices for Gainsborough
What replacement roof lanterns cost in common sizes (guide, inc VAT, supply only):
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 2000 mm | 2.00 m² | £1,495–£1,795£1,246 ex VAT from | Configure |
| 1500 × 2000 mm | 3.00 m² | £1,995–£2,295£1,662 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 |
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 Gainsborough
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 Gainsborough 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 Gainsborough
My old lantern leaks. Is it the lantern or the roof?
Often the roof or kerb detailing. A survey or close inspection will tell. If the lantern is the problem, replacing it is usually better value than repairing old polycarbonate.
How long does replacement take on site?
For a like-for-like swap on a sound kerb, often a day. Kerb or roof repairs add time.
Who checks building regulations for a lantern in Gainsborough?
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 Gainsborough?
Yes. Delivery to Gainsborough (DN21) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.