What do flat rooflights in Crowborough involve?
Thinking about flat rooflights in Crowborough? The short answer: fixed double or triple glazed rooflights for flat roofs and extensions. The longer answer depends on your roof, which is why we survey before we price.
Many South East homes have been extended more than once, and an old dome over an earlier extension is often due for replacement. Typical uses for flat rooflights include kitchen extensions, side returns and flat-roofed back rooms.
Crowborough is around 33 km from Brighton, and we survey and fit throughout that part of East Sussex, including the TN6 district.
Choices for your Crowborough project
- Insulated kerb or timber upstand built to suit
- Integral or fitted blinds
- Rain sensor if paired with an opening unit
- Double or triple glazing
- Plastered or lined internal reveal
- Even, top-down daylight across the whole room
- Fixed units are simple, quiet and low-maintenance
What to check first
- New openings in an existing roof need a structural check on joists
- Needs a properly formed upstand — usually at least 150 mm above the finished roof surface (check the manufacturer's figure)
Do you need permission in Crowborough?
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.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
See our building regulations guide for U-values, glazing limits and self-certification.
What do flat rooflights cost in Crowborough?
These are typical supply-and-fit ranges. For an address in Crowborough, 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 |
From enquiry to finished job
- Tell us what you have. Send the TN6 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Crowborough, measures and checks structure and access.
- 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.
Neighbouring towns
Other services in Crowborough
Common questions
Can you fit into my existing flat roof?
Yes. We form a new opening, trim the joists, build and waterproof an upstand and make good the ceiling. A survey confirms the joist direction and roof build-up first.
Double or triple glazing?
Double glazing suits most domestic jobs. Triple glazing improves thermal performance and cuts noise from rain, which is worth it over bedrooms or where the energy calculation is tight.
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.
Do I need to be at home for the survey in Crowborough?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Can you work alongside my builder in Crowborough?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
