Roof lantern upstands in Chelsea
For roof lantern upstands in Chelsea, start with the guide prices on this page, then send photos and measurements for a fixed written quote covering SW10.
Price a roof lantern upstand for Chelsea
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Chelsea projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
On the shortest day Chelsea gets about 7h 50m of daylight, with the sun only 15.1° above the horizon at noon. Light from the sky overhead is the brightest available in winter, which is exactly what a roof lantern collects.
- Ordered with your lantern if you wish
- Roof membrane dressed up the outside
- Prefabricated insulated or site-built timber
Delivery and fitting in Chelsea
Delivery to SW10 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 SW10 and quote a fixed price after seeing photos or surveying.
Delivery to SW10 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Chelsea
Guide prices for an insulated upstand on its own, by lantern size, including VAT:
| Lantern kerb size | Perimeter | Insulated upstand, guide |
|---|---|---|
| 1500 × 1500 mm | 6.0 m | £295£246 ex VAT |
| 1000 × 2500 mm | 7.0 m | £295£246 ex VAT |
| 1000 × 3000 mm | 8.0 m | £345£288 ex VAT |
| 1500 × 2000 mm | 7.0 m | £295£246 ex VAT |
Guide prices include VAT at 20%, upstand only, supply only. Upstands are made to match the lantern's external size; your fixed price is confirmed in writing before you order.
Planning and building regulations for Chelsea
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 Chelsea 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 Chelsea
What height should my upstand be?
High enough to keep water away from the lantern seal, commonly at least 150 mm above the finished roof surface. Follow the instructions for your chosen range.
Can I order a lantern before the upstand is built?
Yes, if you build the upstand to the lantern's stated external size. Many people order the lantern and upstand together so they match.
Do you deliver roof lanterns to Chelsea?
Yes. Delivery to Chelsea (SW10) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
Is it worth having solar-control glass in Chelsea?
With the midsummer sun about 62.0° high at noon, roof glass in Chelsea gets strong summer sun. Solar control is recommended for large or south-facing lanterns.