Pitched roof windows for Derry/Londonderry: the essentials
Pitched roof windows in Derry/Londonderry means centre-pivot and top-hung skylights for tiled and slate roofs. 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. Pitched roof windows suit lofts, attic rooms, landings and vaulted ceilings.
Derry/Londonderry is the main town we list in County Londonderry; we also cover nearby Strabane and Limavady.
What you can choose
- Double or triple glazing
- Centre-pivot or top-hung
- Integral blinds and shutters
- Flashings for tiles, slates or recessed fitting
- Combination and stacked windows
- Centre-pivot opening for easy cleaning from inside
- Fits between rafters in most roofs
What to check first
- Escape-window rules can apply to loft rooms
- Insulation collars and vapour control must be detailed
Planning and building rules for Derry/Londonderry
Northern Ireland's householder permitted development allows rooflights within limits — no more than 15 cm projection on road-facing slopes and a 0.5 m margin from ridge, eaves and party walls. A side-facing window within 15 m of a neighbouring boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
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.
What do pitched roof windows cost in Derry/Londonderry?
These are typical supply-and-fit ranges. For an address in Derry/Londonderry, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large top-hung or electric window | £2,155 – £3,355 | £1,795 – £2,795 |
| Standard centre-pivot window Typical | £1,435 – £2,155 | £1,195 – £1,795 |
| Small roof window | £1,075 – £1,555 | £895 – £1,295 |
How the job runs
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Derry/Londonderry address.
- Measure and check. A surveyor visits Derry/Londonderry, measures and checks structure and access.
- 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
Related work in Derry/Londonderry
Common questions
Will it need building regulations approval?
Fitting a new roof window usually involves cutting rafters and changing the thermal envelope, so building control approval (or, in England and Wales, a competent-person route) is normally needed. We tell you which applies.
Do I need planning permission for a roof window?
Often not, under householder permitted development, provided it does not project too far above the roof plane and conditions are met. Listed buildings, flats and some conservation areas are different. Our planning guide covers each nation.
Centre-pivot or top-hung?
Centre-pivot windows are easy to clean and suit most rooms. Top-hung windows open out from the top for an unobstructed view and suit lower roof pitches near eye level.
Do I need to be at home for the survey in Derry/Londonderry?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
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.
