Sun tunnels & tubular skylights in Carmarthen: what is involved?
Our sun tunnels & tubular skylights service in Carmarthen covers light pipes that bring daylight to halls and bathrooms with no window. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere. Sun tunnels & tubular skylights suit windowless hallways, landings and bathrooms.
Carmarthen sits about 22 km from Llanelli and 23 km from Ammanford, and we cover the whole SA31 postcode district and the roads in between.
What you can choose
- Ventilation adaptor
- Rigid (brighter) or flexible tubes
- Insulated tube sections
- Integrated electric light
- Diffusers in several sizes
- Small ceiling opening, quick fit
- Optional ventilation or lighting kit on some models
Before you order: points to check
- Not a substitute for a habitable-room window
- Tube runs need insulation in cold lofts to limit condensation
Consents for sun tunnels & tubular skylights in Carmarthen
Welsh householder permitted development (Class C) allows rooflights that project no more than 15 cm and sit no higher than the existing roof — but not in conservation areas, National Parks, AONBs or World Heritage Sites. A side-facing rooflight within 10.5 m of the boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
Welsh Building Regulations expect new or replacement rooflights to reach 2.2 W/m²K and roof windows 1.4 W/m²K or a Band B rating. A revised Welsh Approved Document L takes effect on 4 March 2027; rooflights in new dwellings stay at 2.2 W/m²K.
See our building regulations guide for U-values, glazing limits and self-certification.
What do sun tunnels & tubular skylights cost in Carmarthen?
Prices below are shown including and excluding VAT. In Carmarthen, 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 |
The process, step by step
- Tell us what you have. Send the SA31 postcode, a rough size and a couple of photos.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- 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.
Nearby towns
More we do in Carmarthen
Sun tunnels & tubular skylights in Carmarthen: questions
Rigid or flexible tube?
Rigid tubes carry much more light. Flexible tubes are easier where the loft is cluttered, but lose light faster.
Can it work at night?
Some models include a light fitting in the diffuser.
Will it get condensation?
Insulating the tube where it passes through a cold loft prevents most condensation.
Is the survey in Carmarthen free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
How do I book a survey in Carmarthen?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
