Roof lantern upstands in Portsmouth
We quote roof lantern upstands for Portsmouth and the rest of Hampshire, matched to the exact size of your lantern, with the price confirmed in writing before you order.
Price a roof lantern upstand for Portsmouth
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Portsmouth projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
At 50.8°N, Portsmouth sees roughly 7h 57m of daylight in late December and 16h 31m 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
- Level and square for a correct fit
- Roof membrane dressed up the outside
Delivery and fitting in Portsmouth
Your quote includes delivery to Portsmouth at a confirmed price, usually to the kerbside or driveway on pallets.
Fitting in Portsmouth can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to PO1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Portsmouth
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 |
| 1500 × 2000 mm | 7.0 m | £295£246 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 Portsmouth
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.
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 Portsmouth 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 Portsmouth
Do I need an upstand for a roof lantern?
Yes. Lanterns are designed to sit on an upstand, never directly on the roof deck.
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.
Do I need planning permission for a roof lantern in Portsmouth?
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.
Is it worth having solar-control glass in Portsmouth?
With the midsummer sun about 62.6° high at noon, roof glass in Portsmouth gets strong summer sun. Solar control is recommended for large or south-facing lanterns.