Flat rooflights for Brighton: the essentials
Flat rooflights in Brighton means fixed double or triple glazed rooflights for flat roofs and extensions. We cover the BN1 district and the rest of East Sussex, with a survey before any price is fixed.
Many South East homes have been extended more than once, and an old dome over an earlier extension is often due for replacement. Think of flat rooflights for landings, bathrooms and rear extensions with flat roofs.
Brighton is the main town we list in East Sussex; we also cover nearby Hove and Portslade.
Choices for your Brighton project
- Plastered or lined internal reveal
- Frame colours: anthracite, black, white or RAL
- Integral or fitted blinds
- Square, rectangular or long-format sizes
- Insulated kerb or timber upstand built to suit
- Even, top-down daylight across the whole room
- Fixed units are simple, quiet and low-maintenance
Things we check at survey
- Needs a properly formed upstand — usually at least 150 mm above the finished roof surface (check the manufacturer's figure)
- The roof membrane must be dressed up the upstand before the unit goes on
Do you need permission in Brighton?
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
Read the planning permission guide before you commit to a design.
What do flat rooflights cost in Brighton?
These are typical supply-and-fit ranges. For an address in Brighton, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or triple glazed (1500 × 2500 mm and up) | £2,395 – £4,195 | £1,995 – £3,495 |
| Mid-size double glazed (1000 × 2000 mm) Typical | £1,675 – £2,395 | £1,395 – £1,995 |
| Small double glazed (up to 1000 × 1000 mm) | £1,195 – £1,795 | £995 – £1,495 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Brighton address.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Flat rooflights near Brighton
Other services in Brighton
Questions about flat rooflights in Brighton
Will it make the room too hot?
A big unglazed-to-sky area can add solar gain in summer. Solar-control glass, a blind, or pairing a fixed unit with an opening one keeps it comfortable.
How long does it take?
Fitting into a prepared upstand usually takes a day. Forming a new opening in an existing roof, including making good inside, is often two to three days.
Can a flat rooflight be walked on?
Not unless it is designed as a walk-on unit with structural laminated glass. A standard flat rooflight is for light only — if the roof is used as a terrace, choose a walk-on rooflight instead.
Can you work alongside my builder in Brighton?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Is the survey in Brighton free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
