Roof lantern upstands in Mangotsfield
Need a roof lantern upstand in Mangotsfield? Send your postcode and lantern size and we will quote a fixed price in writing, with delivery to BS16 or fitting where we have cover.
Price a roof lantern upstand for Mangotsfield
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Mangotsfield projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
On the shortest day Mangotsfield 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.
- Made to match the lantern's external size
- Roof membrane dressed up the outside
- Ordered with your lantern if you wish
Delivery and fitting in Mangotsfield
Your quote includes delivery to Mangotsfield at a confirmed price, usually to the kerbside or driveway on pallets.
If you would like us to fit it, we will check fitting cover for BS16 and quote a fixed price after seeing photos or surveying.
Delivery to BS16 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Mangotsfield
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 Mangotsfield
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 Mangotsfield 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 Mangotsfield
Do I need an upstand for a roof lantern?
Yes. Lanterns are designed to sit on an upstand, never directly on the roof deck.
Who makes the upstand weatherproof?
Your roofer, by dressing the roof membrane up the outside of the upstand. The lantern then sits over it.
Who checks building regulations for a lantern in Mangotsfield?
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 you deliver roof lanterns to Mangotsfield?
Yes. Delivery to Mangotsfield (BS16) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.