Roof lantern upstands in Hemel Hempstead
Need a roof lantern upstand in Hemel Hempstead? Send your postcode and lantern size and we will quote a fixed price in writing, with delivery to HP3 or fitting where we have cover.
Price a roof lantern upstand for Hemel Hempstead
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Hemel Hempstead projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
At 51.75°N, Hemel Hempstead sees roughly 7h 47m of daylight in late December and 16h 41m in late June. A lantern faces the bright overhead sky all year, so it brings in useful light even on the short, grey days.
- Ordered with your lantern if you wish
- Prefabricated insulated or site-built timber
- Roof membrane dressed up the outside
Delivery and fitting in Hemel Hempstead
Delivery to HP3 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 HP3 and quote a fixed price after seeing photos or surveying.
Delivery to HP3 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Hemel Hempstead
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 Hemel Hempstead
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 Hemel Hempstead 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 Hemel Hempstead
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.
Do I need planning permission for a roof lantern in Hemel Hempstead?
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.
Who checks building regulations for a lantern in Hemel Hempstead?
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.