How we approach flat rooflights in Gillingham
Flat rooflights in Gillingham means fixed double or triple glazed rooflights for flat roofs and extensions. We cover the ME7 district and the rest of Kent, with a survey before any price is fixed.
Larger gardens in much of the South East mean deeper rear extensions, and deeper rooms need light from above rather than only from the doors. Flat rooflights suit landings, bathrooms and rear extensions with flat roofs.
Neighbouring towns include Chatham (2 km) and Rochester (3 km). We offer a survey date when we reply to your enquiry.
What you can choose
- Rain sensor if paired with an opening unit
- Integral or fitted blinds
- Insulated kerb or timber upstand built to suit
- Solar-control or self-cleaning outer pane
- Frame colours: anthracite, black, white or RAL
- Fixed units are simple, quiet and low-maintenance
- Double or triple glazed with a warm-edge spacer
What to check first
- Needs a properly formed upstand — usually at least 150 mm above the finished roof surface (check the manufacturer's figure)
- Rooflights count toward glazing in an extension, which matters for Building Regulations energy and overheating rules
Planning and building rules for Gillingham
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. The Future Homes and Buildings Standards, published in March 2026, apply from 24 March 2027 and keep the 2.2 W/m²K limit for rooflights.
Read the planning permission guide before you commit to a design.
What do flat rooflights cost in Gillingham?
Prices below are shown including and excluding VAT. In Gillingham, as elsewhere, making good inside and access equipment are the main variables.
| 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 |
What happens next
- Tell us what you have. Send the ME7 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Gillingham, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Nearby towns
Related work in Gillingham
Questions about flat rooflights in Gillingham
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.
Do flat rooflights leak?
A well-fitted flat rooflight should not leak. Leaks almost always come from the upstand or membrane detailing, not the glass unit, which is why the upstand height and the way the roof covering is dressed up and under the frame matter more than the brand.
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.
How do I book a survey in Gillingham?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Do I need to be at home for the survey in Gillingham?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
