Opening roof lanterns in Crawley
Planning an extension in Crawley? An opening roof lantern is one of the quickest ways to bring daylight into the middle of the room. Use the configurator for a guide price, then send your kerb size for a fixed quote and delivery date.
Price an opening roof lantern for Crawley
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Opening roof lanterns for Crawley homes
Electric opening vents to let warm air out at the highest point of the room.
In midsummer the noon sun stands about 62.3° high over Crawley, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Rain sensor closes it automatically
- Switch or remote control
- One or two vents depending on size
Delivery and fitting in Crawley
Your quote includes delivery to Crawley at a confirmed price, usually to the kerbside or driveway on pallets.
Need it fitted? Send your postcode and we will confirm whether we have fitting cover in Crawley before quoting.
Delivery to RH11 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Opening roof lantern prices for Crawley
Typical guide prices for opening roof lanterns, supply only and including VAT:
| Kerb size | Roof area | Guide price | 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 |
| 2000 × 3000 mm | 6.00 m² | £3,890–£4,390£3,242 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 Crawley
In England, building regulations energy guidance sets a limiting U-value of 2.2 W/m²K for new and replacement rooflights in existing homes, measured horizontally.
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 Crawley 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 Crawley
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.
How quickly can I get a roof lantern in Crawley?
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 RH11.
Do I need planning permission for a roof lantern in Crawley?
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.