Roof lantern upstands in Swanley
We quote roof lantern upstands for Swanley and the rest of Kent, matched to the exact size of your lantern, with the price confirmed in writing before you order.
Price a roof lantern upstand for Swanley
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Swanley projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
In midsummer the noon sun stands about 62.0° high over Swanley, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Lifts the lantern clear of the roof finish
- Ordered with your lantern if you wish
- Prefabricated insulated or site-built timber
Delivery and fitting in Swanley
Delivery to BR8 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Need it fitted? Send your postcode and we will confirm whether we have fitting cover in Swanley before quoting.
Delivery to BR8 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Swanley
Guide prices for an insulated upstand on its own, by lantern size, including VAT:
| Lantern kerb size | Perimeter | Insulated upstand, guide |
|---|---|---|
| 1200 × 1200 mm | 4.8 m | £245£204 ex VAT |
| 1000 × 1500 mm | 5.0 m | £245£204 ex VAT |
| 1500 × 2500 mm | 8.0 m | £345£288 ex VAT |
| 1500 × 3000 mm | 9.0 m | £345£288 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 Swanley
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.
Lanterns on permitted development extensions are part of the extension's height limits. Adding one to an existing roof is different: over 150 mm of projection can mean a planning application.
Building regulations in Swanley 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 Swanley
Who makes the upstand weatherproof?
Your roofer, by dressing the roof membrane up the outside of the upstand. The lantern then sits over it.
Do I need an upstand for a roof lantern?
Yes. Lanterns are designed to sit on an upstand, never directly on the roof deck.
Do you deliver roof lanterns to Swanley?
Yes. Delivery to Swanley (BR8) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
How quickly can I get a roof lantern in Swanley?
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 BR8.