Rectangular roof lanterns in Gwynedd
Whether you are in Bangor (Gwynedd) or elsewhere in Gwynedd, the process is the same: configure your lantern, get a guide price, then a fixed quote and a delivery date.
Get a price in Gwynedd
Send your postcode and kerb size for a fixed written quote.
Choosing rectangular roof lanterns in Gwynedd
The classic double-hipped lantern: a ridge, four sloping sides and the most size choice.
Across Gwynedd, the shortest day brings around 7h 32m of daylight and the midsummer sun reaches about 60.3° at noon. A lantern collects light from the bright overhead sky all year, and the right glass keeps the long summer days comfortable.
- Standard sizes or made to your kerb
- The most size options of any lantern shape
- Ridge along the long axis, four glazed slopes
- Stock anthracite, black or white, or any RAL
Delivery and fitting in Gwynedd
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.
Rectangular roof lantern prices
Guide prices for common rectangular roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,295–£1,495£1,079 ex VAT from | 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 |
| 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 in Gwynedd
In Wales, the Welsh Government's own Approved Document L applies, with limiting values that are not the same as England's.
Wales has its own householder permitted development rules; listed buildings and conservation areas are the usual cases needing consent.
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
Rectangular roof lanterns in Gwynedd: questions
What is the most common rectangular roof lantern size?
Sizes of 1000 × 2000 mm and 1500 × 2500 mm are common standard sizes for kitchen and dining extensions, but the right size is the one that matches your kerb. If your kerb is not built yet, our sizes guide helps you pick a standard size first.
Does a longer lantern need extra support?
Long lanterns use intermediate rafters inside the lantern itself. The roof structure around the opening must be designed to carry the lantern's weight; your builder or engineer sizes the trimmers.
Which way should the ridge run?
The ridge runs along the longer side. On a square opening there is no ridge and the lantern becomes a pyramid.
How quickly can I get a roof lantern in Gwynedd?
Stock sizes are typically ready in 5–10 working days, made-to-measure in 3–4 weeks, plus delivery. Your quote gives the date for Gwynedd.