Replacement roof lanterns in Welwyn Garden City
Looking for a replacement roof lantern in Welwyn Garden City? We price it to your kerb size, confirm the fixed price in writing and deliver to AL8 and the surrounding postcodes, ready for your builder to fit or for us to quote fitting.
Price a replacement roof lantern for Welwyn Garden City
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Replacement roof lanterns for Welwyn Garden City homes
Swap a tired, leaking or polycarbonate lantern for modern double glazing.
At 51.8°N, Welwyn Garden City sees roughly 7h 46m of daylight in late December and 16h 42m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Replace old polycarbonate with glass
- Supply only or a fitting quote
- Reuse the kerb if sound and to size
Delivery and fitting in Welwyn Garden City
Delivery to AL8 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Fitting in Welwyn Garden City can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to AL8 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Replacement roof lantern prices for Welwyn Garden City
Typical guide prices for replacement roof lanterns, supply only and including VAT:
| Kerb size | Roof area | Guide price | 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 |
| 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 Welwyn Garden City
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 Welwyn Garden City 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 Welwyn Garden City
Can I replace polycarbonate panels with glass?
Usually not in the old frame: glass is much heavier than polycarbonate and the frame was not designed for it. Replacing the whole lantern is the safer route.
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.
Can you fit a roof lantern in Welwyn Garden City?
We can quote for fitting where we have cover. Send your postcode and photos of the roof and kerb, and we will confirm before quoting.
Do you deliver roof lanterns to Welwyn Garden City?
Yes. Delivery to Welwyn Garden City (AL8) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.