Sliding rooflights for Lisburn: the essentials
Sliding rooflights in Lisburn means box rooflights whose glass lid slides back for walk-out roof access. We cover the BT27 district and the rest of County Antrim, with a survey before any price is fixed.
Many Northern Irish homes have later flat-roofed kitchen extensions where an old dome can be swapped for glass. Think of sliding rooflights for walk-out access where a hatch would feel cramped.
From Lisburn to Belfast, Castlereagh and Newtownabbey, the same survey-first process applies: measure, specify, fix the price, then fit.
Specification options
- Integrated balustrade on some ranges
- Electric drive with safety edge
- Anthracite, black or RAL frames
- Double or triple glazing
- Box (glazed sides) or flat sliding lid
- Electric operation with safety stops
- Full-width, walk-out access to a roof terrace
Things we check at survey
- The stair opening and headroom must meet Building Regulations
- Electric units need a dedicated supply and commissioning
Do you need permission in Lisburn?
In Northern Ireland, roof alterations come under Class B of the 2015 order: a rooflight facing a road must not project more than 15 cm and must sit at least 0.5 m from the ridge, eaves, verge and party wall. Listed buildings also need listed building consent from the council.
For homes in Northern Ireland, Technical Booklet F1 sets 1.6 W/m²K (or WER Band C) for replacement glazing including rooflights. New dwellings must average 1.40 W/m²K across windows, roof windows and rooflights.
Read the planning permission guide before you commit to a design.
Guide prices for Lisburn
Prices below are shown including and excluding VAT. In Lisburn, 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 |
How the job runs
- 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.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Sliding rooflights near Lisburn
Related work in Lisburn
Sliding rooflights in Lisburn: questions
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 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.
Can you work alongside my builder in Lisburn?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do I need to be at home for the survey in Lisburn?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
