How we approach sun tunnels & tubular skylights in Dorchester
Our sun tunnels & tubular skylights service in Dorchester 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.
Many South West towns mix Georgian and Victorian terraces with modern estates, so the right product differs street by street. Sun tunnels & tubular skylights suit small internal rooms where a full rooflight will not fit.
We work across Dorset, including Dorchester, and in neighbouring towns such as Weymouth and Bridport. Access, parking and how the glass reaches the roof are all checked at the survey.
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
- Rigid or flexible tubes for awkward lofts
Before you order: points to check
- Gives light, not a view
- Not a substitute for a habitable-room window
Do you need permission in Dorchester?
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. The Future Homes and Buildings Standards, published in March 2026, apply from 24 March 2027 and keep the 2.2 W/m²K limit for rooflights.
See our building regulations guide for U-values, glazing limits and self-certification.
What do sun tunnels & tubular skylights cost in Dorchester?
Guide prices for sun tunnels & tubular skylights in Dorchester are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Dorchester, measures and checks structure and access.
- 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.
Sun tunnels & tubular skylights near Dorchester
More we do in Dorchester
Sun tunnels & tubular skylights in Dorchester: questions
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 go through a flat roof?
Yes, with a flat-roof flashing and upstand.
Will it get condensation?
Insulating the tube where it passes through a cold loft prevents most condensation.
Can you work alongside my builder in Dorchester?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Is the survey in Dorchester free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
