Sliding rooflights in Farnham: what is involved?
We handle sliding rooflights across Surrey, including Farnham. In short: box rooflights whose glass lid slides back for walk-out roof access. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Across the South East, single-storey kitchen extensions on 1930s semis and post-war detached houses are where most flat rooflights and lanterns go. Think of sliding rooflights for staircases that rise to a roof terrace.
Farnham sits about 5 km from Aldershot and 8 km from Fleet, and we cover the whole GU9 postcode district and the roads in between.
Options we can specify in Farnham
- Rain sensor
- Anthracite, black or RAL frames
- Electric drive with safety edge
- Double or triple glazing
- Box (glazed sides) or flat sliding lid
- Replaces a dormer or stair enclosure on some roofs
- Full-width, walk-out access to a roof terrace
Things we check at survey
- Needs space on the roof for the lid to slide clear
- The stair opening and headroom must meet Building Regulations
Planning, building control and Farnham
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.
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 Farnham
Prices below are shown including and excluding VAT. In Farnham, 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 |
From enquiry to finished job
- 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.
Neighbouring towns
More we do in Farnham
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.
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.
Is a sliding rooflight better than an access hatch?
For daily use, usually yes — you walk out under open sky instead of climbing through a hinged hatch. A hatch costs less and suits occasional access.
How do I book a survey in Farnham?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Is the survey in Farnham free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
