How we approach sliding rooflights in Kensington
Our sliding rooflights service in Kensington covers box rooflights whose glass lid slides back for walk-out roof access. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
London homes often run deep from front to back, so the middle of the ground floor is the darkest space — exactly where an overhead rooflight earns its keep. Think of sliding rooflights for walk-out access where a hatch would feel cramped.
We work across Greater London, including Kensington, and in neighbouring towns such as Notting Hill and Shepherds Bush. Access, parking and how the glass reaches the roof are all checked at the survey.
Choices for your Kensington project
- Electric drive with safety edge
- Integrated balustrade on some ranges
- Double or triple glazing
- Anthracite, black or RAL frames
- Box (glazed sides) or flat sliding lid
- Electric operation with safety stops
- Replaces a dormer or stair enclosure on some roofs
Before you order: points to check
- Weight and point loads need a structural check
- Electric units need a dedicated supply and commissioning
Planning, building control and Kensington
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. 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.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. 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.
See our building regulations guide for U-values, glazing limits and self-certification.
What do sliding rooflights cost in Kensington?
These are typical supply-and-fit ranges. For an address in Kensington, 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 |
|---|---|---|
| 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.
- 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.
Sliding rooflights near Kensington
Related work in Kensington
Questions about sliding rooflights in Kensington
Is it lockable?
Yes. Units lock from inside and the drive holds the lid closed.
What if it is raining?
Fitted with a rain sensor, an electric unit closes automatically. Most also have a manual override for power cuts.
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.
Will I need planning permission in Kensington?
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.
Can you work alongside my builder in Kensington?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
