Roof lantern upstands in Trowbridge
We quote roof lantern upstands for Trowbridge and the rest of Wiltshire, matched to the exact size of your lantern, with the price confirmed in writing before you order.
Price a roof lantern upstand for Trowbridge
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Trowbridge projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
On the shortest day Trowbridge gets about 7h 51m of daylight, with the sun only 15.2° 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
- Made to match the lantern's external size
- Lifts the lantern clear of the roof finish
Delivery and fitting in Trowbridge
Delivery to BA14 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 Trowbridge before quoting.
Delivery to BA14 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Trowbridge
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 |
| 1000 × 2000 mm | 6.0 m | £295£246 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 Trowbridge
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 Trowbridge 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 Trowbridge
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 an upstand for a roof lantern?
Yes. Lanterns are designed to sit on an upstand, never directly on the roof deck.
Do I need planning permission for a roof lantern in Trowbridge?
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 Trowbridge?
With the midsummer sun about 62.1° high at noon, roof glass in Trowbridge gets strong summer sun. Solar control is recommended for large or south-facing lanterns.