If you are replacing the roof of your house there are some electrical needs you need to consider, as in the roof space most of your electrical cables run.
1) This is a good time to have all yore electrical wiring in the
roof space checked for any damage by rats and vermin and any repairs
2) In many old house the lighting circuits do not have earths connect and this is a requirement of the AS-NZS 3000/2007,.It
is also the time to install extra fans or lights.
3) If you do not have hard wired smoke alarms then this is the time to do this, as new legislation as of the 1st of January 2017 stats the all new dwellings and any substantial work being done on the dwelling, must have interconnect photoelectric smoke alarm, and changes coming into effect by 2027 is that there must be a smoke alarm in each bed room and hallway.
4) This is also the time to consider if you need to upgrade your mains
as they come into your house through the roof. Parker's Electrical NQ can give you a quote to do this work and will fit in with the company replacing the roof.