Skylight installation in Brentwood: what is involved?
Our skylight installation service in Brentwood covers survey, supply and fit — new openings, extensions and fit-only work. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Flat, open landscape in much of the East means roofs take the wind, so upstand and seal details matter more than the brand of glass. In Brentwood, as anywhere, skylight installation is the usual choice for new extensions, new openings and fit-only jobs.
Jobs in Brentwood 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.
Choices for your Brentwood project
- New openings with joist trimming
- Electrics coordination
- Fit only (customer-supplied units)
- Upstands and flashings
- Supply and fit
- Fixed price in writing before work
- Fitting for builders on new extensions
Before you order: points to check
- Work at height is planned with suitable access
- Fit-only work relies on the product being suitable and complete
Planning and building rules for Brentwood
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. 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.
Read the planning permission guide before you commit to a design.
Skylight installation prices in Brentwood
These are typical supply-and-fit ranges. For an address in Brentwood, 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 |
From enquiry to finished job
- 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.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Skylight installation near Brentwood
More we do in Brentwood
Common questions
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 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.
Do I need to be at home for the survey in Brentwood?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Do you offer skylight installation in Brentwood?
Yes. We carry out skylight installation in Brentwood and across Essex. Send your postcode and we will offer a survey date when we reply.
