Pitched roof windows for Castlereagh: the essentials
Thinking about pitched roof windows in Castlereagh? The short answer: centre-pivot and top-hung skylights for tiled and slate roofs. The longer answer depends on your roof, which is why we survey before we price.
Many Northern Irish homes have later flat-roofed kitchen extensions where an old dome can be swapped for glass. Think of pitched roof windows for lofts, attic rooms, landings and vaulted ceilings.
Castlereagh sits about 4 km from Belfast and 10 km from Newtownabbey, and we cover the whole BT5 postcode district and the roads in between.
Options we can specify in Castlereagh
- Flashings for tiles, slates or recessed fitting
- Double or triple glazing
- Manual, electric or solar-powered opening
- Integral blinds and shutters
- Combination and stacked windows
- Flashings to suit tiles or slates
- Centre-pivot opening for easy cleaning from inside
Things we check at survey
- Insulation collars and vapour control must be detailed
- Rafters may need trimming for wider windows
Planning, building control and Castlereagh
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. 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.
What do pitched roof windows cost in Castlereagh?
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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 |
The process, step by step
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Castlereagh, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Pitched roof windows near Castlereagh
More we do in Castlereagh
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.
Can you replace an old roof window?
Yes — replacement into the same opening is usually quicker than a new install, often a few hours per window.
Can a roof window be fitted from inside?
In most cases, yes — only the tiles around the opening are lifted, and much of the work is done from inside the loft.
Do I need to be at home for the survey in Castlereagh?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Will I need planning permission in Castlereagh?
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.
