In humid regions with heavy tree cover, north slopes stay wet far longer after rain. Moss holds water against the shingle and shortens its life on that side specifically, so one slope may fail well ahead of the rest.

You can handle this one yourself. No call needed.

Related

• Two or three layers of shingle already on the roof
• Plank decking with gaps between the boards
• Rust streaks below the chimney flashing
• Wood shingle under the asphalt
• No ridge vent and no soffit intake
• Valley metal rusted or missing
• Masonry chimney needs work
• Sagging visible along the ridge line

Back to Roofing.

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Written by Jaylan Jones. I Like To Exterior Services earns a referral fee when a call connects to a contractor. See our business-model disclosure.