The roofer also reported there was some fungus/mildew developing during the attic (white places on a few of the roof joists), which was an indication of weak air flow during the attic. When I re-roof, should I go Along with the plywood vs . OSB? Should really I've the number https://roofreplacementottawa70246.popup-blog.com/31070265/roofers-ottawa-ontario-secrets