Opening roof lanterns in Chiswick
Choosing an opening roof lantern for a house in Chiswick? Start with the guide prices below, check the planning and building regulations notes for England, then ask for a fixed quote with delivery to W4.
Price an opening roof lantern for Chiswick
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Opening roof lanterns for Chiswick homes
Electric opening vents to let warm air out at the highest point of the room.
In midsummer the noon sun stands about 61.9° high over Chiswick, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Helps keep kitchens cool in summer
- One or two vents depending on size
- Rain sensor closes it automatically
Delivery and fitting in Chiswick
Delivery to W4 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Fitting in Chiswick can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to W4 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Opening roof lantern prices for Chiswick
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 |
| 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 Chiswick
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 Chiswick 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 Chiswick
Can a vent be added later?
Usually not to an existing fixed lantern. Decide before ordering.
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 Chiswick?
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 W4.
Who checks building regulations for a lantern in Chiswick?
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.