uPVC roof lanterns in Dorset
Buy uPVC roof lanterns for homes and building projects anywhere in Dorset. See guide prices below, then get a fixed written quote for your size, glass and colours.
Get a price in Dorset
Send your postcode and kerb size for a fixed written quote.
Choosing uPVC roof lanterns in Dorset
A lower-cost lantern with white uPVC frames for smaller openings.
Across Dorset, the shortest day brings around 7h 57m of daylight and the midsummer sun reaches about 62.7° at noon. A lantern collects light from the bright overhead sky all year, and the right glass keeps the long summer days comfortable.
- White uPVC frames
- Lower cost than aluminium
- Same ridge-and-hip shape
- Double glazed units as standard
Delivery and fitting in Dorset
Delivery to mainland addresses here is quoted for your postcode and confirmed in writing before you order.
Fitting can be quoted where we have cover; send your postcode and photos of the roof and kerb and we will confirm before quoting.
uPVC roof lantern prices
Guide prices for common uPVC roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1000 mm | 1.00 m² | £845–£995£704 ex VAT from | Configure |
| 1200 × 1200 mm | 1.44 m² | £995–£1,195£829 ex VAT from | Configure |
| 1000 × 1500 mm | 1.50 m² | £1,045–£1,295£871 ex VAT from | Configure |
| 1000 × 2000 mm | 2.00 m² | £1,195–£1,395£996 ex VAT from | Configure |
| 1500 × 2000 mm | 3.00 m² | £1,495–£1,795£1,246 ex VAT from | Configure |
Guide prices include VAT at 20%, supply only, uPVC 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 in Dorset
For homes in England, a new or replacement rooflight should achieve a U-value of 2.2 W/m²K or better in the horizontal position, under Approved Document L.
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 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
uPVC roof lanterns in Dorset: questions
Is uPVC heavier?
Weight is dominated by the glass, so the difference is small.
Will white uPVC yellow over time?
Modern uPVC profiles are UV-stabilised and should stay white with normal cleaning. Very old lanterns, especially with polycarbonate panels, are the ones that discolour.
Are uPVC lanterns as good as aluminium?
They do the same job at a lower price, with bulkier frames and fewer colour and size options. For most showpiece extensions aluminium is worth the extra.
Who checks building regulations for a lantern in Dorset?
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.