The stair and landing in our mill terrace are dark. Sun tunnel or roof window?
The Gregs built Reddish's mid-19th century terraces for mill workers, and in a terrace the landing may have no window of its own. The roof is the only place to take daylight from, and what sits under the roof decides the answer.
If the loft is empty
A sun tunnel is a daylight pipe. It is a roof dome, a reflective tube across the loft and a frosted diffuser in the landing ceiling, for which we cut a neat round opening in the plaster. It lights the stair and nothing more, since it cannot be opened and shows no sky. The rooms guide says where it fits.
If the loft is a room
A roof window in the room above can put light down the stair, and it opens. The cost is reach: over a stairwell the handle can sit well above head height, so a pole, a handset or a solar motor comes into the choice. Our blinds and controls page shows how the controls work.
Who goes up and down
A stair is used by everyone, so a light that works without anyone doing anything is a good fit. A sun tunnel has no controls and no cleaning inside beyond a wipe of the diffuser. That counts for a lot in a house with children or an older relative.
Why it suits a busy house
Nobody has to learn anything to use a sun tunnel, which matters when a stair is shared by a whole family. There is no handle, no motor and no blind to lose the remote for. The only upkeep is a wipe of the diffuser, and we explain at handover how the dome outside is looked after.
The bathroom too
A bathroom with loft space above can use a sun tunnel as well. A sun tunnel does not clear steam, so an extractor is still needed, and the regulations page covers how the rules treat it.
For a dark mill-terrace stair
Look above the ceiling first. Empty loft means a sun tunnel, loft room means a roof window.




