Couldn't agree more. I'd add that it's also worth checking the underside of the sheets if you can flip them safely. Sometimes sellers repaint the top ...

Exactly right—attic ventilation isn't just a summer thing. I've inspected plenty of homes where moisture damage was directly tied to inadequate attic ...

Good points all around, but I'd add one thing: don't overlook skylights or chimneys. Those areas can be sneaky trouble spots too. Run your ice barrier...

Good catch on the insulation angle—seen that plenty of times myself. Another thing worth checking is bathroom or kitchen exhaust fans venting directly...

Had a similar battle myself a couple years back. Noticed the green stuff spreading slowly over the north side of my roof—pretty common actually, espec...