Replacement roof lanterns in Ampthill
Whether your Ampthill extension is still on paper or the roof is already on, we can price a replacement roof lantern to suit it. Standard sizes cost less and arrive sooner; made-to-measure fits a kerb that is already built.
Price a replacement roof lantern for Ampthill
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Replacement roof lanterns for Ampthill homes
Swap a tired, leaking or polycarbonate lantern for modern double glazing.
At 52.03°N, Ampthill sees roughly 7h 44m of daylight in late December and 16h 44m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Warmer, quieter, brighter
- Reuse the kerb if sound and to size
- Supply only or a fitting quote
Delivery and fitting in Ampthill
Delivery to MK45 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Fitting in Ampthill can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to MK45 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Replacement roof lantern prices for Ampthill
Typical guide prices for replacement roof lanterns, supply only and including VAT:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,295–£1,495£1,079 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 |
| 2000 × 4000 mm | 8.00 m² | £4,095–£4,795£3,412 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 Ampthill
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 Ampthill 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 Ampthill
Will a new lantern be warmer?
A modern double glazed lantern with a thermally broken frame loses far less heat than polycarbonate.
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.
Do you deliver roof lanterns to Ampthill?
Yes. Delivery to Ampthill (MK45) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
Who checks building regulations for a lantern in Ampthill?
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.