Electric opening rooflights for Derry/Londonderry: the essentials
Our electric opening rooflights service in Derry/Londonderry covers hinged rooflights that open on an electric actuator for fresh air. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Many Northern Irish homes have later flat-roofed kitchen extensions where an old dome can be swapped for glass. Typical uses for electric opening rooflights include rooms that overheat in summer or steam up when cooking.
Derry/Londonderry is the main town we list in County Londonderry; we also cover nearby Strabane and Limavady.
Choices for your Derry/Londonderry project
- Double or triple glazing
- Manual winder on smaller units
- Electric actuator with wall switch or remote
- Integral blind
- Frame colour to match your doors
- Electric opening — no poles or winding
- Can be grouped with fixed units on one roof
Things we check at survey
- Lid opening height is limited by the actuator stroke, typically a few hundred millimetres
- Electrical connection should be made by a competent electrician to BS 7671
Planning and building rules for Derry/Londonderry
Most rooflights on houses in Northern Ireland are permitted development under Class B, but not in a conservation area or on a listed building's curtilage. Listed buildings also need listed building consent from the council.
Technical Booklet F1 (2022) asks for replacement windows and rooflights in existing homes to reach WER Band C or a U-value of 1.6 W/m²K, assessed in the vertical position. New dwellings must average 1.40 W/m²K across windows, roof windows and rooflights.
See our building regulations guide for U-values, glazing limits and self-certification.
What do electric opening rooflights cost in Derry/Londonderry?
Prices below are shown including and excluding VAT. In Derry/Londonderry, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large with rain sensor and blind | £4,195 – £5,995 | £3,495 – £4,995 |
| Mid-size electric with rain sensor Typical | £2,995 – £4,195 | £2,495 – £3,495 |
| Small manual or electric opening unit | £2,395 – £3,115 | £1,995 – £2,595 |
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.
Nearby towns
Related work in Derry/Londonderry
Questions about electric opening rooflights in Derry/Londonderry
Can it open in a power cut?
Most electric units stay where they are during a power cut. Some manufacturers offer a manual override or battery backup — we will tell you which option the chosen model has.
Is it secure when open?
An opening rooflight is a vent, not an access hatch, so the gap is small. For security, close it when the house is empty — a rain sensor does not lock the unit.
Is it noisy?
Actuators run for a few seconds and are about as loud as an electric blind. Once closed, an opening unit is as quiet as a fixed one.
Is the survey in Derry/Londonderry 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 Derry/Londonderry?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
