Roof lantern upstands in Berkhamsted
For roof lantern upstands in Berkhamsted, start with the guide prices on this page, then send photos and measurements for a fixed written quote covering HP4.
Price a roof lantern upstand for Berkhamsted
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Berkhamsted projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
On the shortest day Berkhamsted gets about 7h 47m of daylight, with the sun only 14.8° 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
- Lifts the lantern clear of the roof finish
- Made to match the lantern's external size
Delivery and fitting in Berkhamsted
We confirm the delivery cost and date for HP4 on your quote. Lanterns arrive palletised, with the glass packed separately.
Fitting in Berkhamsted can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to HP4 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Berkhamsted
Guide prices for an insulated upstand on its own, by lantern size, including VAT:
| Lantern kerb size | Perimeter | Insulated upstand, guide |
|---|---|---|
| 1000 × 1500 mm | 5.0 m | £245£204 ex VAT |
| 1000 × 2000 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 |
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 Berkhamsted
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 Berkhamsted 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 Berkhamsted
Who makes the upstand weatherproof?
Your roofer, by dressing the roof membrane up the outside of the upstand. The lantern then sits over it.
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.
Is it worth having solar-control glass in Berkhamsted?
With the midsummer sun about 61.7° high at noon, roof glass in Berkhamsted gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
Do I need planning permission for a roof lantern in Berkhamsted?
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.