What does skylight replacement in Finchley involve?
We handle skylight replacement across Greater London, including Finchley. In short: replacing tired domes and failed glass with a modern rooflight. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Victorian and Edwardian terraces with narrow side returns are typical of much of London, and a glass roof or long flat rooflight is the usual way to keep the back rooms bright once the return is built over. Think of skylight replacement for yellowed domes, misted glass and leaking roof windows.
We work across Greater London, including Finchley, and in neighbouring towns such as Muswell Hill and Highgate. Access, parking and how the glass reaches the roof are all checked at the survey.
What you can choose
- Misted glass unit replacement only
- Like-for-like size replacement
- Dome to flat glass upgrade
- Roof window replacement in pitched roofs
- Fixed to electric opening
- Cures most chronic leaks
- Clearer view and more light
Things we check at survey
- Enlarging the opening changes the structure and may need approval
- Upstand and roof condition decide the scope
Planning and building rules for Finchley
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.
Skylight replacement prices in Finchley
Guide prices for skylight replacement in Finchley 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 |
|---|---|---|
| Replacement with upstand rebuild and opening unit | £2,995 – £4,795 | £2,495 – £3,995 |
| Dome to flat glass upgrade Typical | £1,915 – £2,995 | £1,595 – £2,495 |
| Like-for-like glass rooflight | £1,555 – £2,155 | £1,295 – £1,795 |
How the job runs
- Tell us what you have. Send the N3 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Finchley, measures and checks structure and access.
- 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.
Skylight replacement near Finchley
Related work in Finchley
Common questions
Do I need building regulations approval to replace a rooflight?
Replacements in existing homes generally need to meet current thermal standards and may need notification or approval. We advise on the route for your job.
What do you do with the old unit?
We remove it from site and recycle what can be recycled.
Can you replace only the misted glass?
Sometimes, if the frame is sound and the maker supplies replacement units. Often a complete new rooflight costs little more and performs better.
Can you work alongside my builder in Finchley?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do I need to be at home for the survey in Finchley?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
