What do roof lanterns in Sevenoaks involve?
Thinking about roof lanterns in Sevenoaks? The short answer: hipped glass lanterns that lift the ceiling of orangeries and extensions. The longer answer depends on your roof, which is why we survey before we price.
Across the South East, single-storey kitchen extensions on 1930s semis and post-war detached houses are where most flat rooflights and lanterns go. In Sevenoaks, as anywhere, roof lanterns are the usual choice for rooms that need height as well as light.
We work across Kent, including Sevenoaks, and in neighbouring towns such as Tonbridge and Orpington. Access, parking and how the glass reaches the roof are all checked at the survey.
Specification options
- Rectangular, square or bespoke sizes
- Aluminium or uPVC systems
- Opening vents with electric control
- LED lighting in the plaster box
- Solar-control or self-cleaning glass
- Slim aluminium bars, more glass
- Light from every angle across the day
Before you order: points to check
- Larger lanterns may need a steel or timber ring beam
- Some designs project above the roof enough to affect planning on certain houses
Planning, building control and Sevenoaks
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. 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.
Roof lanterns prices in Sevenoaks
Guide prices for roof lanterns in Sevenoaks are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or bespoke aluminium lantern | £5,995 – £10,795 | £4,995 – £8,995 |
| Mid-size aluminium lantern (2 × 3 m) Typical | £3,955 – £5,995 | £3,295 – £4,995 |
| Small lantern (1 × 2 m) | £2,995 – £3,955 | £2,495 – £3,295 |
From enquiry to finished job
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Sevenoaks address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Roof lanterns near Sevenoaks
Other services in Sevenoaks
Common questions
Aluminium or uPVC?
Aluminium gives slimmer bars and a longer life; uPVC costs less. We fit both.
Do they leak?
Modern lanterns are sealed systems. Leaks usually trace back to the kerb or roof membrane detail, which we form and check ourselves.
Do roof lanterns get hot?
They can in summer if clear glass is used on a south-facing roof. Solar-control glass and an opening vent make a big difference.
Is the survey in Sevenoaks free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Do you fit roof lanterns in Sevenoaks?
Yes. We survey and fit roof lanterns in Sevenoaks and across Kent. Send your postcode and we will offer a survey date when we reply.
