What do sliding rooflights in Horsham involve?
Sliding rooflights in Horsham means box rooflights whose glass lid slides back for walk-out roof access. We cover the RH12 district and the rest of West Sussex, with a survey before any price is fixed.
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 walk-out access where a hatch would feel cramped.
Jobs in Horsham 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.
Specification options
- Integrated balustrade on some ranges
- Double or triple glazing
- Anthracite, black or RAL frames
- Box (glazed sides) or flat sliding lid
- Electric drive with safety edge
- Daylight down the stair when closed
- Electric operation with safety stops
Before you order: points to check
- The stair opening and headroom must meet Building Regulations
- Electric units need a dedicated supply and commissioning
Planning, building control and Horsham
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. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
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.
Our planning guide covers each nation in more detail.
Guide prices for Horsham
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Sliding rooflights near Horsham
Other services in Horsham
Sliding rooflights in Horsham: 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.
Is it lockable?
Yes. Units lock from inside and the drive holds the lid closed.
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.
Is the survey in Horsham free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
How do I book a survey in Horsham?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
