Roof lantern installation in St Helens
We quote roof lantern installation for St Helens and the rest of Merseyside, matched to the exact size of your lantern, with the price confirmed in writing before you order.
Price lantern fitting for St Helens
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Lantern fitting for St Helens homes
Optional fitting by installers working under S&K, quoted for your postcode.
In midsummer the noon sun stands about 60.0° high over St Helens, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Ready upstand, replacement or new opening
- Weathertight check on completion
- Optional fitting quoted for your postcode
Delivery and fitting in St Helens
Delivery to WA10 is quoted for your postcode and arrives on pallets at the kerbside, so plan enough people to unload.
Fitting in St Helens can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to WA10 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Roof lantern installation guide prices for St Helens
Guide prices for fitting only, by lantern size, including VAT (the lantern is priced separately):
| Lantern size | Fit to ready upstand | Replace existing lantern |
|---|---|---|
| 1200 × 1200 mm | £545 | £995 |
| 1000 × 1500 mm | £545 | £995 |
| 1500 × 2500 mm | £795 | £1,295 |
| 1500 × 3000 mm | £845 | £1,395 |
Fitting guide prices include VAT and exclude the lantern, access equipment and any roof or kerb repairs. New openings are priced after a survey. Your fixed price is confirmed in writing before work starts.
Planning and building regulations for St Helens
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.
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 St Helens 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 St Helens
Can you build the upstand as well?
We can quote for upstands and associated roofing on a survey basis.
Do you need to survey before fitting?
For a lantern on a ready upstand, clear photos and measurements are often enough. Replacements and new openings need a survey.
Do you deliver roof lanterns to St Helens?
Yes. Delivery to St Helens (WA10) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.
Is it worth having solar-control glass in St Helens?
With the midsummer sun about 60.0° high at noon, roof glass in St Helens gets strong summer sun. Solar control is recommended for large or south-facing lanterns.