Flat rooflights in Southampton
Planning an extension in Southampton? 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 Southampton
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Flat rooflights for Southampton homes
A single near-flat pane on an upstand: minimal, low and discreet.
Winter daylight in Southampton lasts about 7h 56m, against 16h 32m in midsummer. Glass in the roof makes the most of the short days, and the right glass keeps the long ones comfortable.
- Minimal, frameless-looking from inside
- Very low profile from outside
- Sized to your upstand
Delivery and fitting in Southampton
Your quote includes delivery to Southampton at a confirmed price, usually to the kerbside or driveway on pallets.
Need it fitted? Send your postcode and we will confirm whether we have fitting cover in Southampton before quoting.
Delivery to SO14 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Flat rooflight prices for Southampton
Guide prices for common flat rooflight sizes, including VAT, supply only:
| Kerb size | Roof area | Guide price | 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 |
| 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 Southampton
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 Southampton 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 Southampton
Can a flat rooflight open?
Some ranges offer electric opening versions. Ask for availability for your size.
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.
How quickly can I get a roof lantern in Southampton?
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 SO14.
Can you fit a roof lantern in Southampton?
We can quote for fitting where we have cover. Send your postcode and photos of the roof and kerb, and we will confirm before quoting.