Skylight installation for Eltham: the essentials
Skylight installation in Eltham means survey, supply and fit — new openings, extensions and fit-only work. We cover the SE9 district and the rest of Greater London, with a survey before any price is fixed.
Party walls are a fact of life in London terraces, and rooflights close to a shared wall need detailing that keeps the neighbour's side dry too. In Eltham, as anywhere, skylight installation is the usual choice for builders' projects and retrofits into finished roofs.
Jobs in Eltham 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 Eltham
- Internal plaster reveal
- New openings with joist trimming
- Electrics coordination
- Fit only (customer-supplied units)
- Supply and fit
- Making good inside included
- Fit-only for units you have bought
Before you order: points to check
- Building Regulations approval (a building warrant in Scotland) may be needed
- Fit-only work relies on the product being suitable and complete
Planning and building rules for Eltham
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. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
Our planning guide covers each nation in more detail.
Skylight installation prices in Eltham
These are typical supply-and-fit ranges. For an address in Eltham, 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 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Skylight installation near Eltham
More we do in Eltham
Common questions
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.
Do you fit rooflights bought elsewhere?
Yes. We check the product and the opening first, and our workmanship terms cover the fitting rather than the product.
How long does installation take?
Fitting into a prepared upstand takes about a day. A new opening in an existing roof, including making good, often takes two to three days.
Can you work alongside my builder in Eltham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do you offer skylight installation in Eltham?
Yes. We carry out skylight installation in Eltham and across Greater London. Send your postcode and we will offer a survey date when we reply.
