What is a clear indication of chronic condensation problems during a summertime inspection?

The presence of gray or black stains on the north side roof sheathing is indeed a clear indication of chronic condensation problems. This staining typically results from mold or mildew growth, which thrive in damp conditions. Condensation can occur when warm, humid air meets cooler surfaces, particularly in areas with low sunlight exposure, such as the north side of a roof. Over time, this moisture accumulation can lead to staining and degradation of the materials. Observing these stains during a summertime inspection suggests that there have been longstanding moisture issues, making it a significant indicator of chronic condensation issues that need to be addressed to prevent further damage to the roofing structure and the home.

In contrast, fresh paint on the roof might suggest recent repair or cosmetic work but doesn’t inherently indicate condensation issues. A shiny surface on roof materials may reflect other issues, such as residue or poor material choice, rather than condensation. Lastly, the absence of moss might indicate a dry environment or proper roofing conditions, but it does not provide evidence of past moisture problems on its own.