What do sliding rooflights in Twickenham involve?
Thinking about sliding rooflights in Twickenham? The short answer: box rooflights whose glass lid slides back for walk-out roof access. The longer answer depends on your roof, which is why we survey before we price.
Many London roofs are reached only through the house or over neighbouring property, so lifting heavy glass is planned at survey rather than on the day. Sliding rooflights suit staircases that rise to a roof terrace.
We work across Greater London, including Twickenham, and in neighbouring towns such as Richmond and Kingston upon Thames. Access, parking and how the glass reaches the roof are all checked at the survey.
Specification options
- Double or triple glazing
- Rain sensor
- Integrated balustrade on some ranges
- Box (glazed sides) or flat sliding lid
- Electric drive with safety edge
- Daylight down the stair when closed
- Replaces a dormer or stair enclosure on some roofs
Before you order: points to check
- Electric units need a dedicated supply and commissioning
- Needs space on the roof for the lid to slide clear
Planning and building rules for Twickenham
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. 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.
Sliding rooflights prices in Twickenham
Prices below are shown including and excluding VAT. In Twickenham, 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.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Sliding rooflights near Twickenham
More we do in Twickenham
Common questions
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.
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.
Do you fit sliding rooflights in Twickenham?
Yes. We survey and fit sliding rooflights in Twickenham and across Greater London. Send your postcode and we will offer a survey date when we reply.
Will I need planning permission in Twickenham?
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.
