What do sliding rooflights in Finchley involve?
We handle sliding rooflights across Greater London, including Finchley. In short: box rooflights whose glass lid slides back for walk-out roof access. 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. In Finchley, as anywhere, sliding rooflights are the usual choice for walk-out access where a hatch would feel cramped.
From Finchley to Muswell Hill, Highgate and Hampstead, the same survey-first process applies: measure, specify, fix the price, then fit.
What you can choose
- Box (glazed sides) or flat sliding lid
- Anthracite, black or RAL frames
- Electric drive with safety edge
- Integrated balustrade on some ranges
- Double or triple glazing
- Daylight down the stair when closed
- Glazed box sides keep the headroom open
What to check first
- Electric units need a dedicated supply and commissioning
- Needs space on the roof for the lid to slide clear
Consents for sliding rooflights in Finchley
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.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. 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.
Our planning guide covers each nation in more detail.
What do sliding rooflights cost in Finchley?
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large box slider with electric drive | £11,995 – £20,395 | £9,995 – £16,995 |
| Standard box slider Typical | £8,995 – £13,195 | £7,495 – £10,995 |
| Flat sliding lid | £7,195 – £9,595 | £5,995 – £7,995 |
What happens next
- Send the details. Postcode, rough size and a photo of the roof and room.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
Other services in Finchley
Common questions
How heavy is it?
Box sliders weigh hundreds of kilograms, so delivery may need a crane or lifting gear, and the structure must be checked.
What if it is raining?
Fitted with a rain sensor, an electric unit closes automatically. Most also have a manual override for power cuts.
Can children open it?
Controls can be key-switched or placed out of reach. We will set the controls up to suit the household.
How do I book a survey in Finchley?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Do you fit sliding rooflights in Finchley?
Yes. We survey and fit sliding rooflights in Finchley and across Greater London. Send your postcode and we will offer a survey date when we reply.
