Roof lantern upstands in Seaham
We quote roof lantern upstands for Seaham and the rest of County Durham, matched to the exact size of your lantern, with the price confirmed in writing before you order.
Price a roof lantern upstand for Seaham
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern upstands for Seaham projects
Insulated upstands and kerbs that raise the lantern above the roof finish.
In midsummer the noon sun stands about 58.6° high over Seaham, 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
- Prefabricated insulated or site-built timber
- Ordered with your lantern if you wish
Delivery and fitting in Seaham
Your quote includes delivery to Seaham at a confirmed price, usually to the kerbside or driveway on pallets.
Fitting in Seaham can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to SR7 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern upstands guide prices for Seaham
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 |
| 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 Seaham
For homes in England, a new or replacement rooflight should achieve a U-value of 2.2 W/m²K or better in the horizontal position, under Approved Document L.
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 Seaham 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 Seaham
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 Seaham?
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 SR7.
Is it worth having solar-control glass in Seaham?
With the midsummer sun about 58.6° high at noon, roof glass in Seaham gets strong summer sun. Solar control is recommended for large or south-facing lanterns.