Roof lantern upstands in Potters Bar
For roof lantern upstands in Potters Bar, start with the guide prices on this page, then send photos and measurements for a fixed written quote covering EN6.
Price a roof lantern upstand for Potters Bar
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Potters Bar projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
In midsummer the noon sun stands about 61.7° high over Potters Bar, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Lifts the lantern clear of the roof finish
- Level and square for a correct fit
- Roof membrane dressed up the outside
Delivery and fitting in Potters Bar
Delivery to EN6 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 EN6 and quote a fixed price after seeing photos or surveying.
Delivery to EN6 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Potters Bar
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 |
| 1000 × 2500 mm | 7.0 m | £295£246 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 Potters Bar
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 Potters Bar 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 Potters Bar
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.
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 you deliver roof lanterns to Potters Bar?
Yes. Delivery to Potters Bar (EN6) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
Who checks building regulations for a lantern in Potters Bar?
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.