Triple glazed roof lanterns in Dorset
We supply triple glazed roof lanterns across Dorset, from Bournemouth to the smaller towns, priced to your kerb size and delivered to your site.
Get a price in Dorset
Send your postcode and kerb size for a fixed written quote.
Choosing triple glazed roof lanterns in Dorset
Three panes for lower heat loss, a warmer inner surface and less noise.
Across Dorset, the shortest day brings around 7h 57m of daylight and the midsummer sun reaches about 62.7° at noon. A lantern collects light from the bright overhead sky all year, and the right glass keeps the long summer days comfortable.
- Warmer inner pane, less condensation risk
- Ideal for colder, exposed locations
- Quieter in heavy rain
- Three panes for lower heat loss
Delivery and fitting in Dorset
Delivery to mainland addresses here is quoted for your postcode and confirmed in writing before you order.
Fitting can be quoted where we have cover; send your postcode and photos of the roof and kerb and we will confirm before quoting.
Triple glazed roof lantern prices
What triple glazed roof lanterns cost in common sizes (guide, inc 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 |
| 1000 × 2000 mm | 2.00 m² | £2,095–£2,495£1,746 ex VAT from | Configure |
| 1500 × 2000 mm | 3.00 m² | £2,695–£3,195£2,246 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 in Dorset
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 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
Triple glazed roof lanterns in Dorset: questions
Will triple glazing stop rain noise?
It reduces it noticeably. Laminated glass reduces it further.
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.
How quickly can I get a roof lantern in Dorset?
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 Dorset.
Triple glazed roof lanterns by town in Dorset
- Triple glazed roof lanterns in Bournemouth
- Triple glazed roof lanterns in Bridport
- Triple glazed roof lanterns in Christchurch
- Triple glazed roof lanterns in Dorchester
- Triple glazed roof lanterns in Ferndown
- Triple glazed roof lanterns in Poole
- Triple glazed roof lanterns in Swanage
- Triple glazed roof lanterns in Weymouth
- Triple glazed roof lanterns in Wimborne Minster