We are both out at work all day. What happens if it rains while a rooflight is open?
From the early 1930s Droylsden grew as a housing overflow area for Manchester. Whatever the age of the house, a household may be empty from morning to evening, and a window left open for a warm kitchen is a window nobody is watching.
The sensor
VELUX electric and solar windows can have a rain sensor that closes them as soon as rain begins. It is fitted to the window, so it works whether you are upstairs or out. It does not replace judgement, though. On a day with a forecast of heavy rain, shutting the window as you leave is still the safer habit, and the sensor is there for the shower you did not expect.
Manual, electric or solar
A manual window has no sensor, so it is for rooms that stay shut when you go out. An electric window takes its power from the mains, so it needs a cable route planned when the ceiling is open anyway. A solar window carries its own panel and battery and needs no cable, which suits a room already decorated. Our page on rooflight rain sensors explains how the sensor behaves, and the guide to electric or solar opening compares the two.
Children at home
If children are in the house on their own after school, think about the room. A restrictor that holds a window slightly open is a common choice, but on the window that serves as the room's escape route, any lock or restrictor must still let an adult open it fully, and the means of escape is set out in the Building Regulations guide. Ask which window that is before you choose; the child-safe opening guide covers it.
For an empty house
A rain sensor covers the shower you did not plan for. It does not cover the storm you did.





