Cape cod style home, concrete slab foundation. No exterior cracks on walls or ground. No evidence on interior of cracking drywall, stick ing doors, windows, etc (many nail pops in old, original drywall though). The rafters on the rear side of a steeply pitched roof were separating from the ridge board.
The top portion of the rater was still in contact, but by the bottom of the edge where the rafter abuts the ridge board, a full one inch gap was present. condition was only present on the rear side, left 9-10 rafters counting for the left exterior wall (most significant degree of separation) to the center.
Of course, no collar ties are present (recomendation made along with referral for evaluation and correction by a roofer).
The questions are: what is the cause of this and what is the appropraite repair (for my own understanding).
I normally would have thought that sinking, settling or other structural issue would be present, but I could not find anything…
Thanks for any help.