What do roof lanterns in Clapham involve?
Thinking about roof lanterns in Clapham? 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.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. In Clapham, as anywhere, roof lanterns are the usual choice for rooms that need height as well as light.
From Clapham to Balham, Battersea and Brixton, the same survey-first process applies: measure, specify, fix the price, then fit.
What you can choose
- Solar-control or self-cleaning glass
- Internal and external colours
- LED lighting in the plaster box
- Opening vents with electric control
- Rectangular, square or bespoke sizes
- Double or triple glazed with solar-control options
- Light from every angle across the day
Before you order: points to check
- Needs a strong, level kerb or upstand
- Larger lanterns may need a steel or timber ring beam
Consents for roof lanterns in Clapham
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. 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. 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.
See our building regulations guide for U-values, glazing limits and self-certification.
Roof lanterns prices in Clapham
Guide prices for roof lanterns in Clapham 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 |
What happens next
- Tell us what you have. Send the SW4 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Agree the quote. You approve the specification and price before anything is ordered.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Roof lanterns near Clapham
Other services in Clapham
Questions about roof lanterns in Clapham
How big can a lantern be?
Aluminium systems go to around three by six metres in standard ranges; larger sizes are made to order.
Roof lantern or flat rooflight?
A lantern adds height and sky from all sides; a flat rooflight is lower-profile and cleaner from outside. Our guide compares them in detail.
Aluminium or uPVC?
Aluminium gives slimmer bars and a longer life; uPVC costs less. We fit both.
Will I need planning permission in Clapham?
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.
Do you fit roof lanterns in Clapham?
Yes. We survey and fit roof lanterns in Clapham and across Greater London. Send your postcode and we will offer a survey date when we reply.
