Flat rooflights in Carshalton
Looking for a flat rooflight in Carshalton? We price it to your kerb size, confirm the fixed price in writing and deliver to SM5 and the surrounding postcodes, ready for your builder to fit or for us to quote fitting.
Price a flat rooflight for Carshalton
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Flat rooflights for Carshalton homes
A single near-flat pane on an upstand: minimal, low and discreet.
In midsummer the noon sun stands about 62.1° high over Carshalton, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Minimal, frameless-looking from inside
- Usually cheaper than a lantern
- Sized to your upstand
Delivery and fitting in Carshalton
Your quote includes delivery to Carshalton at a confirmed price, usually to the kerbside or driveway on pallets.
Fitting in Carshalton can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to SM5 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Flat rooflight prices for Carshalton
Guide prices for common flat rooflight sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | Configure |
|---|---|---|---|
| 1000 × 1000 mm | 1.00 m² | £595–£695£496 ex VAT from | Configure |
| 1200 × 1200 mm | 1.44 m² | £695–£845£579 ex VAT from | Configure |
| 1000 × 1500 mm | 1.50 m² | £695–£845£579 ex VAT from | Configure |
| 1000 × 2000 mm | 2.00 m² | £845–£995£704 ex VAT from | Configure |
Guide prices include VAT at 20%, supply only, aluminium with self-cleaning double glazing in a stock colour. Your fixed price is confirmed in writing on your quote before you order.
Planning and building regulations for Carshalton
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.
On a permitted development extension the lantern counts towards the extension's height; on an existing roof, a rooflight projecting more than 150 mm may need planning permission.
Building regulations in Carshalton 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 Carshalton
Do flat rooflights leak?
They should not, provided they are installed on a properly flashed upstand with the right fall and the seals are maintained.
Are flat rooflights cheaper than lanterns?
Usually, size for size. They use one glass unit and a simple frame.
How quickly can I get a roof lantern in Carshalton?
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 SM5.
Is it worth having solar-control glass in Carshalton?
With the midsummer sun about 62.1° high at noon, roof glass in Carshalton gets strong summer sun. Solar control is recommended for large or south-facing lanterns.