Sliding rooflights in Clevedon: what is involved?
Our sliding rooflights service in Clevedon 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.
Western coasts take wind-driven rain, so we pay close attention to upstand height and flashing laps on exposed roofs. In Clevedon, as anywhere, sliding rooflights are the usual choice for staircases that rise to a roof terrace.
Clevedon sits about 7 km from Nailsea and 8 km from Portishead, and we cover the whole BS21 postcode district and the roads in between.
What you can choose
- Box (glazed sides) or flat sliding lid
- Anthracite, black or RAL frames
- Rain sensor
- Electric drive with safety edge
- Integrated balustrade on some ranges
- Replaces a dormer or stair enclosure on some roofs
- Daylight down the stair when closed
Things we check at survey
- Weight and point loads need a structural check
- The stair opening and headroom must meet Building Regulations
Planning, building control and Clevedon
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.
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. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
Read the planning permission guide before you commit to a design.
What do sliding rooflights cost in Clevedon?
Guide prices for sliding rooflights in Clevedon are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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.
Nearby towns
Other services in Clevedon
Sliding rooflights in Clevedon: questions
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 it lockable?
Yes. Units lock from inside and the drive holds the lid closed.
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.
Will I need planning permission in Clevedon?
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.
How do I book a survey in Clevedon?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
