Flat rooflights in Portishead
Buy flat rooflights for homes in Portishead and across Somerset. Choose a standard size or have one made to your kerb, see a guide price straight away, then get a fixed written quote with delivery to your BS20 address.
Price a flat rooflight for Portishead
Postcode and kerb size first, then your details. We reply with a fixed written quote.
Flat rooflights for Portishead homes
A single near-flat pane on an upstand: minimal, low and discreet.
In midsummer the noon sun stands about 62.0° high over Portishead, so roof glazing gets the full strength of it. That is why solar-control glass is worth considering on larger lanterns here.
- Usually cheaper than a lantern
- Sized to your upstand
- Minimal, frameless-looking from inside
Delivery and fitting in Portishead
We confirm the delivery cost and date for BS20 on your quote. Lanterns arrive palletised, with the glass packed separately.
If you would like us to fit it, we will check fitting cover for BS20 and quote a fixed price after seeing photos or surveying.
Delivery to BS20 is standard mainland delivery, priced for your postcode and confirmed in writing before you order.
Flat rooflight prices for Portishead
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 |
| 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 Portishead
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.
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 Portishead 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 Portishead
Are flat rooflights cheaper than lanterns?
Usually, size for size. They use one glass unit and a simple frame.
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.
Who checks building regulations for a lantern in Portishead?
Your local authority building control team or a registered building control approver. For a lantern in a new extension it forms part of the extension's approval; replacements in existing homes have their own rules.
Can you fit a roof lantern in Portishead?
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.