What are sun tunnels & tubular skylights?
Our sun tunnels & tubular skylights service in Gwynedd covers light pipes that bring daylight to halls and bathrooms with no window. We survey every job before fixing the price.
Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere. Slate roofs, stone cottages and terraced valleys are typical across Wales, and slim rooflights that sit low in the slates suit them best.
Towns in Gwynedd
What you can choose
- Rigid (brighter) or flexible tubes
- Pitched or flat-roof flashings
- Integrated electric light
- Insulated tube sections
- Diffusers in several sizes
- Optional ventilation or lighting kit on some models
- Rigid or flexible tubes for awkward lofts
Planning and building rules in Wales
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.
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.
Guide prices
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
- Tell us about the roof. Send the postcode, rough sizes and a photo or two through the form, WhatsApp or the guide-price tool.
- Free survey. For new installations a surveyor measures the opening, checks the roof build-up and talks through glass and options.
- Fixed written quote. You get the product, the work and the price in writing. Nothing is ordered or paid for until you agree.
- Fitting and handover. We fit, seal and make good, then hand over product data, warranties and any certificate paperwork.
Sun tunnels in nearby areas
Common 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 go through a flat roof?
Yes, with a flat-roof flashing and upstand.
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.
Will I need planning permission in Gwynedd?
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.
