This is a very small amount but it will keep your soffit from bending later.
Frame gable roof soffit.
This is how i did my pole barn workshop and at the end of the video i also show.
How to frame a reverse gable over a door on an existing pole barn.
Here s how to frame a boxed soffit on the eave and gable end of a building.
New roof system will need to be able to accommodate weight of snow drifting against existing wall or sliding off from roof depending upon whether reverse gable will be added to endwall or sidewall.
Before you nail it slide it a tiny bit out from the back of the f channel approximately 1 16 inch.
Begin at one bottom edge of the gable and slide the soffit into the f channel along the wall.
Gable roof soffit and fascia this video shows the framing process from start to finish of the gable end wall in this house on the loft side of the house.
The other end will be closest to you.
Set out the wall plates to whatever centers you need for your gable roof 400 450 600 or 900 governed by the weight of roof covering ie tiles and cut fix the joists so they are parallel to each other and flush with the back edge of the wall plates.
This configuration gives the look of an open eave but it has the same benefits ease of maintenance and energy performance as a closed eave.