Flat rooflights in Chelmsford
Planning an extension in Chelmsford? A flat rooflight is one of the quickest ways to bring daylight into the middle of the room. Use the configurator for a guide price, then send your kerb size for a fixed quote and delivery date.
Price a flat rooflight for Chelmsford
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Flat rooflights for Chelmsford homes
A single near-flat pane on an upstand: minimal, low and discreet.
On the shortest day Chelmsford gets about 7h 47m of daylight, with the sun only 14.8° above the horizon at noon. Light from the sky overhead is the brightest available in winter, which is exactly what a roof lantern collects.
- Fixed or electric opening versions
- Single glazed unit with a slight fall
- Very low profile from outside
Delivery and fitting in Chelmsford
We confirm the delivery cost and date for CM1 on your quote. Lanterns arrive palletised, with the glass packed separately.
Fitting in Chelmsford can be quoted on request by installers working under S&K, subject to cover for your postcode.
Delivery to CM1 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Flat rooflight prices for Chelmsford
What flat rooflights cost in common sizes (guide, inc 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 × 2000 mm | 2.00 m² | £845–£995£704 ex VAT from | Configure |
| 1500 × 1500 mm | 2.25 m² | £895–£1,095£746 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 Chelmsford
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 Chelmsford 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 Chelmsford
Can I walk on a flat rooflight?
Only if it is a walk-on rooflight designed for foot traffic. Standard rooflights are not designed to be walked on.
Can a flat rooflight open?
Some ranges offer electric opening versions. Ask for availability for your size.
Do I need planning permission for a roof lantern in Chelmsford?
Often not, but it depends on the roof, the property and whether it is listed or in a conservation area. Check with your district, borough or unitary council before ordering.
Do you deliver roof lanterns to Chelmsford?
Yes. Delivery to Chelmsford (CM1) is quoted for your exact postcode and confirmed in writing on your quote, together with the lead time.