Roof lantern upstands in Watford
Need a roof lantern upstand in Watford? Send your postcode and lantern size and we will quote a fixed price in writing, with delivery to WD17 or fitting where we have cover.
Price a roof lantern upstand for Watford
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Watford projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
Winter daylight in Watford lasts about 7h 48m, against 16h 40m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Prefabricated insulated or site-built timber
- Lifts the lantern clear of the roof finish
- Level and square for a correct fit
Delivery and fitting in Watford
Delivery to WD17 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Fitting in Watford can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to WD17 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Watford
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 Watford
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.
Lanterns on permitted development extensions are part of the extension's height limits. Adding one to an existing roof is different: over 150 mm of projection can mean a planning application.
Building regulations in Watford 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 Watford
Can I order a lantern before the upstand is built?
Yes, if you build the upstand to the lantern's stated external size. Many people order the lantern and upstand together so they match.
Do I need an upstand for a roof lantern?
Yes. Lanterns are designed to sit on an upstand, never directly on the roof deck.
Is it worth having solar-control glass in Watford?
With the midsummer sun about 61.8° high at noon, roof glass in Watford gets strong summer sun. Solar control is recommended for large or south-facing lanterns.
Can you fit a roof lantern in Watford?
We can quote for fitting where we have cover. Send your postcode and photos of the roof and kerb, and we will confirm before quoting.