Rectangular roof lanterns in Caernarfon
Whether your Caernarfon extension is still on paper or the roof is already on, we can price a rectangular roof lantern to suit it. Standard sizes cost less and arrive sooner; made-to-measure fits a kerb that is already built.
Price a rectangular roof lantern for Caernarfon
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Rectangular roof lanterns for Caernarfon homes
The classic double-hipped lantern: a ridge, four sloping sides and the most size choice.
In midsummer the noon sun stands about 60.3° high over Caernarfon, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Stock anthracite, black or white, or any RAL
- Ridge along the long axis, four glazed slopes
- Suits kitchen-diners and rear extensions
Delivery and fitting in Caernarfon
We confirm the delivery cost and date for LL55 on your quote. Lanterns arrive palletised, with the glass packed separately.
Need it fitted? Send your postcode and we will confirm whether we have fitting cover in Caernarfon before quoting.
Delivery to LL55 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Rectangular roof lantern prices for Caernarfon
What rectangular roof lanterns cost in common sizes (guide, inc VAT, supply only):
| Kerb size | Roof area | Guide price | 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 |
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 Caernarfon
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 in Caernarfon 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
Questions from Caernarfon
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.
Is it worth having solar-control glass in Caernarfon?
With the midsummer sun about 60.3° high at noon, roof glass in Caernarfon gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
How quickly can I get a roof lantern in Caernarfon?
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 LL55.