Sun tunnels & tubular skylights in Derry/Londonderry: what is involved?
Thinking about sun tunnels & tubular skylights in Derry/Londonderry? 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.
Wind and rain off the Atlantic make upstand and flashing details important on Northern Irish roofs. Typical uses for sun tunnels & tubular skylights include windowless hallways, landings and bathrooms.
We cover all of Derry/Londonderry and the BT48 district, and nearby Strabane and Limavady.
What you can choose
- Ventilation adaptor
- Integrated electric light
- Pitched or flat-roof flashings
- Insulated tube sections
- Diffusers in several sizes
- Daylight where no window is possible
- Low maintenance
Before you order: points to check
- Gives light, not a view
- Tube runs need insulation in cold lofts to limit condensation
Planning, building control and 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.
Northern Ireland's energy rules assess rooflight U-values in the vertical position — unlike England and Wales — and expect 1.6 W/m²K or Band C for replacements. New dwellings must average 1.40 W/m²K across windows, roof windows and rooflights.
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 |
|---|---|---|
| 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 |
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.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Sun tunnels & tubular skylights near Derry/Londonderry
More we do in Derry/Londonderry
Sun tunnels & tubular skylights in Derry/Londonderry: questions
Will it get condensation?
Insulating the tube where it passes through a cold loft prevents most condensation.
Can it go through a flat roof?
Yes, with a flat-roof flashing and upstand.
Rigid or flexible tube?
Rigid tubes carry much more light. Flexible tubes are easier where the loft is cluttered, but lose light faster.
Is the survey in Derry/Londonderry free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Will I need planning permission in 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.
