Skylight installation for Finchley: the essentials
For Finchley homes and buildings we offer skylight installation: survey, supply and fit — new openings, extensions and fit-only work. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. Think of skylight installation for builders' projects and retrofits into finished roofs.
Jobs in Finchley 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.
Options we can specify in Finchley
- Electrics coordination
- Fit only (customer-supplied units)
- Internal plaster reveal
- Upstands and flashings
- New openings with joist trimming
- Fit-only for units you have bought
- Fixed price in writing before work
Before you order: points to check
- Building Regulations approval (a building warrant in Scotland) may be needed
- Structural changes may need an engineer's check
Do you need permission in 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.
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.
Guide prices for Finchley
These are typical supply-and-fit ranges. For an address in Finchley, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| New opening in an existing roof, supply and fit | £2,395 – £5,395 | £1,995 – £4,495 |
| Supply and fit into a new extension Typical | £1,435 – £3,595 | £1,195 – £2,995 |
| Fit only, customer-supplied unit | £595 – £1,195 | £495 – £995 |
What happens next
- 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.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Skylight installation near Finchley
Related work in Finchley
Common questions
Is the survey free?
Yes, for new installations. Repair visits are charged.
Do I need a structural engineer?
For new openings that cut joists or rafters, a structural check is sensible and building control may ask for calculations.
Who handles building control?
We tell you which route applies — building control approval, a building warrant in Scotland, or in England and Wales self-certification by a registered competent person — and supply the product data.
Is the survey in Finchley free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
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.
