Hi new to this forum so hopefully I am posting this in the right area. I currently own a Queenslander in Brisbane which is on a sloping block. I have a rear deck attached to the back of the the house(2 really or should I say 2 levels). Part of the deck is exposed to the weather i.e. doesn't have a roof. I am wanting to put a roof over this area in the form of a gable. Had enough of the ongoing maintenance.
This is where the problems starts. The posts that support the deck currently pass through it and end just above the railing height. The post need to be extended to allow me to build the roof over the top of the deck. The posts are currently 4.4 metres and 4.6 metres in length and both would need approximately 1.3 metres added to get to the correct height.
Question is would a half lapped scarf joint( not sure if this is the right name) that has been through bolted be ok? Or should I just try to replace the full length of the post( I am trying to avoid this as it would be a PIA).
Posts are hardwood 100x100.
Any help/advice would be appreciated.