Opening roof lanterns in Farnworth
Buy opening roof lanterns for homes in Farnworth and across Greater Manchester. Choose a standard size or have one made to your kerb, see a guide price straight away, then get a fixed written quote with delivery to your BL4 address.
Price an opening roof lantern for Farnworth
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Opening roof lanterns for Farnworth homes
Electric opening vents to let warm air out at the highest point of the room.
Winter daylight in Farnworth lasts about 7h 27m, against 17h 03m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Plan the power supply early
- Rain sensor closes it automatically
- Electric vents at the room's highest point
Delivery and fitting in Farnworth
Delivery to BL4 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 Farnworth before quoting.
Delivery to BL4 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Opening roof lantern prices for Farnworth
What opening roof lanterns cost in common sizes (guide, inc 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 |
| 2000 × 3000 mm | 6.00 m² | £3,890–£4,390£3,242 ex VAT from | Configure |
| 2000 × 4000 mm | 8.00 m² | £4,790–£5,490£3,992 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 Farnworth
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 Farnworth 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 Farnworth
Does an opening vent let insects in?
When open, yes, as with any window. Some ranges offer fly screens.
Can a vent be added later?
Usually not to an existing fixed lantern. Decide before ordering.
Who checks building regulations for a lantern in Farnworth?
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.
Do I need planning permission for a roof lantern in Farnworth?
Often not, but it depends on the roof, the property and whether it is listed or in a conservation area. Check with your district, borough or unitary council before ordering.