Loft conversion skylights in Derry/Londonderry: what is involved?
Loft conversion skylights in Derry/Londonderry means roof windows planned for loft rooms — light, headroom and escape. We cover the BT48 district and the rest of County Londonderry, with a survey before any price is fixed.
Conservation areas and listed buildings in Northern Ireland are excluded from householder permitted development, so we check before quoting. Think of loft conversion skylights for attic bedrooms, offices and en-suites.
Derry/Londonderry is the main town we list in County Londonderry; we also cover nearby Strabane and Limavady.
Choices for your Derry/Londonderry project
- Combination and stacked layouts
- Balcony roof windows on some ranges
- Electric or solar opening
- Conservation styles
- Blackout and thermal blinds
- Light planned around the room layout
- Blinds and blackout for bedrooms
Before you order: points to check
- Escape-window requirements apply to some loft rooms
- Rafter spacing affects window widths
Planning, building control and Derry/Londonderry
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.
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. Extensions follow a 25% glazing allowance in Technical Booklet F1.
Our planning guide covers each nation in more detail.
Guide prices for Derry/Londonderry
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Electric top-hung escape window | £1,675 – £2,395 | £1,395 – £1,995 |
| Standard centre-pivot window Typical | £1,195 – £1,675 | £995 – £1,395 |
| Small window into open rafters | £955 – £1,315 | £795 – £1,095 |
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.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Nearby towns
More we do in Derry/Londonderry
Common questions
Top-hung or centre-pivot in a loft?
Top-hung gives a clearer view and often suits escape use; centre-pivot is easier to clean and suits higher positions.
How many roof windows does a loft room need?
Enough to give good light — a common rule of thumb is glazing equal to roughly a tenth to a fifth of the floor area, adjusted for orientation and use. We advise at survey.
Can I add blinds later?
Yes — most manufacturers make blinds for each window size.
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.
Is the survey in Derry/Londonderry free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
