Large roof lanterns in South Glamorgan
We supply large roof lanterns across South Glamorgan, from Cardiff to the smaller towns, priced to your kerb size and delivered to your site.
Get a price in South Glamorgan
Send your postcode and kerb size for a fixed written quote.
Choosing large roof lanterns in South Glamorgan
Lanterns of three metres and more for open-plan extensions, with intermediate rafters.
Across South Glamorgan, the shortest day brings around 7h 50m of daylight and the midsummer sun reaches about 62.0° at noon. A lantern collects light from the bright overhead sky all year, and the right glass keeps the long summer days comfortable.
- Fitting can be quoted on request
- Solar-control glass recommended
- Intermediate rafters carry the larger glass
- Delivered as a frame kit with glass
Delivery and fitting in South Glamorgan
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.
Large roof lantern prices
Guide prices for common large roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1500 × 3000 mm | 4.50 m² | £2,595–£2,995£2,162 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 |
| 2500 × 4000 mm | 10.00 m² | £4,895–£5,695£4,079 ex VAT from | Configure |
| 3000 × 4000 mm | 12.00 m² | £5,695–£6,595£4,746 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 in South Glamorgan
In Wales, the Welsh Government's own Approved Document L applies, with limiting values that are not the same as England's.
Permitted development rules in Wales are set separately, so check with your council, especially for listed buildings and conservation areas.
Building regulations are checked by your local authority building control team. Replacing a rooflight in an existing home is building work in Wales too. A competent person scheme installer can self-certify; otherwise building control should be notified.
Sources: Approved Documents (Wales), Planning Portal · Planning permission, GOV.WALES
Large roof lanterns in South Glamorgan: questions
What is the biggest roof lantern you can supply?
It depends on the range. Some go to about 6 m by 4 m with intermediate rafters. Send us your kerb size and we will confirm what can be made.
Do large lanterns overheat a room?
A large area of south-facing glass can make a room warm on sunny days. Solar-control glass, an opening vent and good background ventilation all help. Our guide on overheating explains the options.
How is a large lantern delivered?
On pallets, usually with the frame and glass packed separately. The heaviest single item is normally a glass unit, which needs two or more people to lift safely.
Who checks building regulations for a lantern in South Glamorgan?
Your local authority building control team. For a lantern in a new extension it forms part of the extension's approval; replacements in existing homes have their own rules.