Aluminium fascia/soffits

[junglejim]

Looking at the fascia/soffits and like the aluminium style. Will need to complete the roof covering first though as need to save up for the next stage. I’m struggling to work out what the fascia/soffit should look like in SIP construction as presumably this is essentially part of the panel so not needed. The TF company are providing fascia backer boards so I’m assuming I can install these onto the panel, then install the roof and later add aluminium fascia/soffit finish.

 

Struggling to see this so any help/advice greatly appreciated. 
 

Chris

 ps. Thanks for everyone’s help so far…lots of questions and lots to learn.