Sliding rooflights in Brentwood: what is involved?
For Brentwood homes and buildings we offer sliding rooflights: box rooflights whose glass lid slides back for walk-out roof access. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Barn conversions and timber-framed homes across the East often call for conservation rooflights or bespoke glass. Think of sliding rooflights for walk-out access where a hatch would feel cramped.
Brentwood is around 30 km from Southend-on-Sea, and we survey and fit throughout that part of Essex, including the CM14 district.
Specification options
- Rain sensor
- Box (glazed sides) or flat sliding lid
- Double or triple glazing
- Anthracite, black or RAL frames
- Integrated balustrade on some ranges
- Daylight down the stair when closed
- Electric operation with safety stops
Things we check at survey
- Weight and point loads need a structural check
- Needs space on the roof for the lid to slide clear
Do you need permission in Brentwood?
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. 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.
See our building regulations guide for U-values, glazing limits and self-certification.
What do sliding rooflights cost in Brentwood?
Prices below are shown including and excluding VAT. In Brentwood, as elsewhere, making good inside and access equipment are the main variables.
| 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 |
The process, step by step
- 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.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Sliding rooflights near Brentwood
More we do in Brentwood
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.
Can children open it?
Controls can be key-switched or placed out of reach. We will set the controls up to suit the household.
Does it need planning permission?
A box unit that projects above the roof plane can need planning permission, especially on the front of a house or in a conservation area. We check before you order.
Can you work alongside my builder in Brentwood?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Is the survey in Brentwood free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
