How we approach sun tunnels & tubular skylights in Caernarfon
We handle sun tunnels & tubular skylights across Gwynedd, including Caernarfon. In short: light pipes that bring daylight to halls and bathrooms with no window. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Slate roofs, stone cottages and terraced valleys are typical across Wales, and slim rooflights that sit low in the slates suit them best. Typical uses for sun tunnels & tubular skylights include small internal rooms where a full rooflight will not fit.
We work across Gwynedd, including Caernarfon, and in neighbouring towns such as Llangefni and Bangor, Gwynedd. Access, parking and how the glass reaches the roof are all checked at the survey.
Choices for your Caernarfon project
- Rigid (brighter) or flexible tubes
- Diffusers in several sizes
- Integrated electric light
- Insulated tube sections
- Pitched or flat-roof flashings
- Small ceiling opening, quick fit
- Rigid or flexible tubes for awkward lofts
What to check first
- Not a substitute for a habitable-room window
- Light output falls with tube length and bends
Planning, building control and Caernarfon
Planning rules in Wales are tighter than in England for rooflights: Class C rights do not apply in conservation areas, National Parks or AONBs, so a rooflight there needs planning permission. Listed buildings need listed building consent from the council, and flats have no householder permitted development rights.
In Wales the limiting values are 2.2 W/m²K for a rooflight and 1.4 W/m²K (or WER Band B) for a roof window in an existing house. A revised Welsh Approved Document L takes effect on 4 March 2027; rooflights in new dwellings stay at 2.2 W/m²K.
Our planning guide covers each nation in more detail.
What do sun tunnels & tubular skylights cost in Caernarfon?
These are typical supply-and-fit ranges. For an address in Caernarfon, 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 |
The process, step by step
- Tell us what you have. Send the LL55 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- 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.
Nearby towns
Other services in Caernarfon
Sun tunnels & tubular skylights in Caernarfon: questions
Can it go through a flat roof?
Yes, with a flat-roof flashing and upstand.
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.
Can it work at night?
Some models include a light fitting in the diffuser.
Can you work alongside my builder in Caernarfon?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do I need to be at home for the survey in Caernarfon?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
