How we approach sun tunnels & tubular skylights in Porthmadog
For Porthmadog homes and buildings we offer sun tunnels & tubular skylights: light pipes that bring daylight to halls and bathrooms with no window. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Chapels, barns and farm buildings converted across Wales often need bespoke or conservation-style glass. Think of sun tunnels & tubular skylights for windowless hallways, landings and bathrooms.
Porthmadog sits about 19 km from Pwllheli and 25 km from Caernarfon, and we cover the whole LL49 postcode district and the roads in between.
Specification options
- Rigid (brighter) or flexible tubes
- Pitched or flat-roof flashings
- Ventilation adaptor
- Diffusers in several sizes
- Insulated tube sections
- Small ceiling opening, quick fit
- Works on pitched and flat roofs
What to check first
- Not a substitute for a habitable-room window
- Gives light, not a view
Planning, building control and Porthmadog
In Wales a rooflight on a house is usually permitted development if it stands no more than 15 cm proud of the roof, except on protected land such as conservation areas and National Parks, where permission is needed. 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.
Read the planning permission guide before you commit to a design.
Guide prices for Porthmadog
Prices below are shown including and excluding VAT. In Porthmadog, as elsewhere, making good inside and access equipment are the main variables.
| 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 Porthmadog, measures and checks structure and access.
- 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 Porthmadog
Sun tunnels & tubular skylights in Porthmadog: questions
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.
Can it work at night?
Some models include a light fitting in the diffuser.
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.
How do I book a survey in Porthmadog?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Will I need planning permission in Porthmadog?
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.
