Opening roof lanterns in Penzance
Choosing an opening roof lantern for a house in Penzance? Start with the guide prices below, check the planning and building regulations notes for England, then ask for a fixed quote with delivery to TR18.
Price an opening roof lantern for Penzance
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Opening roof lanterns for Penzance homes
Electric opening vents to let warm air out at the highest point of the room.
At 50.12°N, Penzance sees roughly 8h 03m of daylight in late December and 16h 23m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Switch or remote control
- One or two vents depending on size
- Plan the power supply early
Delivery and fitting in Penzance
Delivery to TR18 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Need it fitted? Send your postcode and we will confirm whether we have fitting cover in Penzance before quoting.
Delivery to TR18 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Opening roof lantern prices for Penzance
Guide prices for common opening roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,990–£2,190£1,658 ex VAT from | Configure |
| 1000 × 2000 mm | 2.00 m² | £2,190–£2,490£1,825 ex VAT from | Configure |
| 1500 × 2000 mm | 3.00 m² | £2,690–£2,990£2,242 ex VAT from | Configure |
| 1500 × 2500 mm | 3.75 m² | £2,990–£3,390£2,492 ex VAT from | Configure |
Guide prices include VAT at 20%, supply only, aluminium with self-cleaning double glazing in a stock colour, including one electric vent. Your fixed price is confirmed in writing on your quote before you order.
Planning and building regulations for Penzance
England's Approved Document L caps the U-value of new or replacement rooflights in existing homes at 2.2 W/m²K, calculated with the glass horizontal.
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 Penzance 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 Penzance
Can a vent be added later?
Usually not to an existing fixed lantern. Decide before ordering.
Can I have a manual opening vent?
Manual vents are rare on lanterns because they are out of reach. Electric operation is standard.
How quickly can I get a roof lantern in Penzance?
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 TR18.
Can you fit a roof lantern in Penzance?
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.