Sun tunnels work well for bringing daylight into windowless halls, landings and bathrooms where a full rooflight is impractical. A rigid reflective tube carries much more light than a flexible one, but a tunnel gives light only — no view and little ventilation.
How does a sun tunnel work?
A clear dome on the roof gathers daylight, a highly reflective tube carries it down, and a diffuser spreads it into the room.
How much light do they give?
Output depends on diameter, length and bends. Short rigid runs perform best; long flexible runs lose light quickly.
Where do sun tunnels suit?
- Internal hallways and landings
- Bathrooms and en-suites
- Walk-in wardrobes and utility rooms
- Rooms below deep or cluttered lofts
What does one cost?
Typically about £1,075–£2,275 inc VAT supplied and fitted, depending on tube size, length and roof type.
This guide gives general information, not legal or structural advice. Rules change and every property is different — check with your council or building control for your address. We review our guides regularly; the date above shows the last review.
Sources
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