Opening roof lanterns in Blackburn
Choosing an opening roof lantern for a house in Blackburn? Start with the guide prices below, check the planning and building regulations notes for England, then ask for a fixed quote with delivery to BB1.
Price an opening roof lantern for Blackburn
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Opening roof lanterns for Blackburn homes
Electric opening vents to let warm air out at the highest point of the room.
Winter daylight in Blackburn lasts about 7h 25m, against 17h 05m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Rain sensor closes it automatically
- Helps keep kitchens cool in summer
- Plan the power supply early
Delivery and fitting in Blackburn
Your quote includes delivery to Blackburn at a confirmed price, usually to the kerbside or driveway on pallets.
Fitting in Blackburn can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to BB1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Opening roof lantern prices for Blackburn
Typical guide prices for opening roof lanterns, supply only and including VAT:
| Kerb size | Roof area | Guide price | 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 |
| 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 Blackburn
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.
On a permitted development extension the lantern counts towards the extension's height; on an existing roof, a rooflight projecting more than 150 mm may need planning permission.
Building regulations in Blackburn 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 Blackburn
Can a vent be added later?
Usually not to an existing fixed lantern. Decide before ordering.
What happens if it rains while the vent is open?
With a rain sensor the vent closes automatically. Without one it stays where you left it, so a sensor is worth having.
Is it worth having solar-control glass in Blackburn?
With the midsummer sun about 59.7° high at noon, roof glass in Blackburn gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
Do I need planning permission for a roof lantern in Blackburn?
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.