How we approach conservation rooflights in Derry/Londonderry
For Derry/Londonderry homes and buildings we offer conservation rooflights: slim, low-profile steel-look rooflights for period and listed roofs. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Many Northern Irish homes have later flat-roofed kitchen extensions where an old dome can be swapped for glass. Typical uses for conservation rooflights include slate and plain-tile roofs where a quiet roofline matters.
We cover all of Derry/Londonderry and the BT48 district, and nearby Strabane and Limavady.
Choices for your Derry/Londonderry project
- Blinds
- Central vertical glazing bar
- Flashings for slate or plain tile
- Toughened or laminated double glazing
- Steel or aluminium frames
- Double glazed behind a period look
- Often preferred by conservation officers
Before you order: points to check
- Lead or matching flashings may be required
- Listed building consent is needed for listed buildings
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.
Our planning guide covers each nation in more detail.
Conservation rooflights prices 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 or electric conservation rooflight | £2,755 – £4,195 | £2,295 – £3,495 |
| Standard conservation rooflight Typical | £2,035 – £2,755 | £1,695 – £2,295 |
| Small conservation rooflight | £1,795 – £2,155 | £1,495 – £1,795 |
What happens next
- 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.
- Agree the quote. You approve the specification and price before anything is ordered.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Nearby towns
More we do in Derry/Londonderry
Common questions
Do they suit slate roofs?
Yes — flashings are made for slates and for plain tiles.
Can they open?
Yes, most are top-hung or side-hung for ventilation and cleaning, with manual or electric operation.
Can you copy an original rooflight?
Some makers produce bespoke sizes to match an existing opening. We can survey and quote.
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.
Can you work alongside my builder in Derry/Londonderry?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
