Triple glazed roof lanterns in Barnet
Buy triple glazed roof lanterns for homes in Barnet and across Greater London. 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 EN5 address.
Price a triple glazed roof lantern for Barnet
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Triple glazed roof lanterns for Barnet homes
Three panes for lower heat loss, a warmer inner surface and less noise.
In midsummer the noon sun stands about 61.8° high over Barnet, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Ideal for colder, exposed locations
- Warmer inner pane, less condensation risk
- Quieter in heavy rain
Delivery and fitting in Barnet
Delivery to EN5 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
If you would like us to fit it, we will check fitting cover for EN5 and quote a fixed price after seeing photos or surveying.
Delivery to EN5 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Triple glazed roof lantern prices for Barnet
Guide prices for common triple glazed roof lantern sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1500 mm | 1.50 m² | £1,795–£2,095£1,496 ex VAT from | Configure |
| 1500 × 2500 mm | 3.75 m² | £3,095–£3,595£2,579 ex VAT from | Configure |
| 2000 × 3000 mm | 6.00 m² | £4,395–£5,095£3,662 ex VAT from | Configure |
| 2000 × 4000 mm | 8.00 m² | £5,595–£6,495£4,662 ex VAT from | Configure |
Guide prices include VAT at 20%, supply only, aluminium with triple glazing in a stock colour. Your fixed price is confirmed in writing on your quote before you order.
Planning and building regulations for Barnet
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 Barnet 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 Barnet
Is triple glazing heavier to lift?
Yes, the glass is roughly 45% heavier. Plan for extra hands or lifting equipment on larger lanterns.
Do I need triple glazing to meet building regulations?
Not usually. Well-specified double glazed lanterns generally meet the limiting values for rooflights. Triple glazing is an upgrade, not normally a requirement. Your building control body can confirm for your project.
Who checks building regulations for a lantern in Barnet?
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 Barnet?
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.