Roof lantern upstands in Penzance
Ordering a roof lantern upstand for a project in Penzance? Tell us the lantern size and roof details and we will confirm the price, lead time and how it reaches TR18.
Price a roof lantern upstand for Penzance
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Penzance projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
In midsummer the noon sun stands about 63.3° high over Penzance, 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
- Roof membrane dressed up the outside
- Level and square for a correct fit
Delivery and fitting in Penzance
Your quote includes delivery to Penzance at a confirmed price, usually to the kerbside or driveway on pallets.
If you would like us to fit it, we will check fitting cover for TR18 and quote a fixed price after seeing photos or surveying.
Delivery to TR18 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Penzance
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 Penzance
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.
Planning-wise, a lantern on a new extension is judged as part of that extension, while one added to an existing roof can fall outside permitted development if it stands more than 150 mm proud.
Building regulations in Penzance 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 Penzance
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.
How quickly can I get a roof lantern in Penzance?
Stock sizes are typically ready in 5–10 working days, made-to-measure in 3–4 weeks, plus delivery. Your quote gives the date for TR18.
Do you deliver roof lanterns to Penzance?
Yes. Delivery to Penzance (TR18) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.