No need to lights in the daytime now!
I love our new skylights! Last year we had one roof window installed in our middle living room. The cooling benefits in summer were incredible. We were able to let hot air out and get some air flow (which is tricky in a very old weatherboard house). Retro-fitting green elements to a house like ours take a lot of thought and challenges. These houses were not designed with passive cooling and heating in mind. I know that we aren't going to reverse climate change by installing skylights and hence using less electricity (air-con, heating and lights in the daytime) but figure that every bit counts.
After being impressed with the first roof window, we decided to get more installed. One fixed skylight in the middle living room and 2 roof windows in our very hot back room. The impact is quite amazing. I keep going to turn the lights off in the kitchen in the daytime, only to realise that it is natural light. People who live in small, dark houses will understand how great that is! We can use the blinds to block out sun when we want to, let the sun in when it is cold, and open them up for breeze. I sound as if I am working for a skylight company!! Even though the cost may seem a lot for each one (between $1500-$2500 depending on whether it opens or not and size), it is not much compared to re-building and installing windows, louvres etc….which was our other choice.
The roof windows with blinds closed - very dark by 3pm
Let there be light!!