What do roof lanterns in Isleworth involve?
We handle roof lanterns across Greater London, including Isleworth. In short: hipped glass lanterns that lift the ceiling of orangeries and extensions. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
London homes often run deep from front to back, so the middle of the ground floor is the darkest space — exactly where an overhead rooflight earns its keep. Typical uses for roof lanterns include orangeries, kitchen-diners and single-storey extensions.
Isleworth sits about 1 km from Hounslow and 3 km from Richmond, and we cover the whole TW7 postcode district and the roads in between.
Choices for your Isleworth project
- LED lighting in the plaster box
- Internal and external colours
- Aluminium or uPVC systems
- Rectangular, square or bespoke sizes
- Opening vents with electric control
- Light from every angle across the day
- Can include opening vents
Things we check at survey
- Larger lanterns may need a steel or timber ring beam
- Needs a strong, level kerb or upstand
Planning, building control and Isleworth
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. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
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. 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.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Isleworth
Prices below are shown including and excluding VAT. In Isleworth, as elsewhere, making good inside and access equipment are the main variables.
| 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 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Isleworth, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
Other services in Isleworth
Questions about roof lanterns in Isleworth
Can a lantern go on an existing extension?
Yes, if the flat roof structure can be opened up and trimmed. We check joists and the roof build-up at survey.
Aluminium or uPVC?
Aluminium gives slimmer bars and a longer life; uPVC costs less. We fit both.
How big can a lantern be?
Aluminium systems go to around three by six metres in standard ranges; larger sizes are made to order.
Is the survey in Isleworth free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Do you fit roof lanterns in Isleworth?
Yes. We survey and fit roof lanterns in Isleworth and across Greater London. Send your postcode and we will offer a survey date when we reply.
