Opening roof lanterns in Witham
Planning an extension in Witham? 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 Witham
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Opening roof lanterns for Witham homes
Electric opening vents to let warm air out at the highest point of the room.
In midsummer the noon sun stands about 61.6° high over Witham, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Switch or remote control
- One or two vents depending on size
- Helps keep kitchens cool in summer
Delivery and fitting in Witham
Your quote includes delivery to Witham 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 Witham before quoting.
Delivery to CM8 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Opening roof lantern prices for Witham
What opening roof lanterns cost in common sizes (guide, inc VAT, supply only):
| 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 Witham
For homes in England, a new or replacement rooflight should achieve a U-value of 2.2 W/m²K or better in the horizontal position, under Approved Document L.
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 Witham 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 Witham
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.
Does an opening vent let insects in?
When open, yes, as with any window. Some ranges offer fly screens.
How quickly can I get a roof lantern in Witham?
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 CM8.
Is it worth having solar-control glass in Witham?
With the midsummer sun about 61.6° high at noon, roof glass in Witham gets strong summer sun. Solar control is recommended for large or south-facing lanterns.