How we approach sun tunnels & tubular skylights in Castlereagh
Thinking about sun tunnels & tubular skylights in Castlereagh? The short answer: light pipes that bring daylight to halls and bathrooms with no window. The longer answer depends on your roof, which is why we survey before we price.
Northern Ireland has a mix of terraces, bungalows and rural farmhouses, and rooflights are a common upgrade when extending. Typical uses for sun tunnels & tubular skylights include windowless hallways, landings and bathrooms.
Neighbouring towns include Belfast (4 km) and Newtownabbey (10 km). We offer a survey date when we reply to your enquiry.
Specification options
- Insulated tube sections
- Ventilation adaptor
- Pitched or flat-roof flashings
- Integrated electric light
- Diffusers in several sizes
- Daylight where no window is possible
- Low maintenance
Things we check at survey
- Not a substitute for a habitable-room window
- Light output falls with tube length and bends
Do you need permission in 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. 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.
For homes in Northern Ireland, Technical Booklet F1 sets 1.6 W/m²K (or WER Band C) for replacement glazing including rooflights. Extensions follow a 25% glazing allowance in Technical Booklet F1.
See our building regulations guide for U-values, glazing limits and self-certification.
Sun tunnels & tubular skylights prices in Castlereagh
These are typical supply-and-fit ranges. For an address in Castlereagh, 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 rigid tunnel, long run | £1,675 – £2,275 | £1,395 – £1,895 |
| Standard rigid tunnel Typical | £1,315 – £1,795 | £1,095 – £1,495 |
| Compact flexible tunnel | £1,075 – £1,435 | £895 – £1,195 |
From enquiry to finished job
- 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.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
Related work in Castlereagh
Sun tunnels & tubular skylights in Castlereagh: questions
Rigid or flexible tube?
Rigid tubes carry much more light. Flexible tubes are easier where the loft is cluttered, but lose light faster.
How much light does a sun tunnel give?
A good rigid tunnel on a bright day lights a hallway well. Output depends on tube diameter, length and the number of bends.
Do sun tunnels need planning permission?
Usually not on a house, provided the dome does not project too far and the property is not listed. Check if you live in a conservation area or a flat.
Is the survey in Castlereagh free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
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.
