What do roof lanterns in Highgate involve?
Thinking about roof lanterns in Highgate? 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. Think of roof lanterns for rooms that need height as well as light.
Jobs in Highgate are planned around access: whether the roof can be reached from the garden, whether a hoist or crane is needed, and where we can park. We check this when we measure.
What you can choose
- Opening vents with electric control
- LED lighting in the plaster box
- Solar-control or self-cleaning glass
- Aluminium or uPVC systems
- Rectangular, square or bespoke sizes
- Adds visual height to a single-storey room
- Can include opening vents
Before you order: points to check
- Plaster-box depth affects how the lantern looks from below
- Larger lanterns may need a steel or timber ring beam
Planning and building rules for Highgate
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. 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.
What do roof lanterns cost in Highgate?
Prices below are shown including and excluding VAT. In Highgate, 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 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Highgate 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.
Nearby towns
Related work in Highgate
Roof lanterns in Highgate: questions
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.
Aluminium or uPVC?
Aluminium gives slimmer bars and a longer life; uPVC costs less. We fit both.
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.
Do you fit roof lanterns in Highgate?
Yes. We survey and fit roof lanterns in Highgate and across Greater London. Send your postcode and we will offer a survey date when we reply.
Is the survey in Highgate free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
