Moss and Algae on Bay Area Roofs: How to Remove and Prevent Growth

Coastal fog and shade make moss and algae a common problem on Bay Area roofs. Learn safe removal methods and prevention strategies that won’t void your warranty.

Why Moss Grows in the Bay Area

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Moss vs. Algae vs. Lichen

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DIY Removal Risks

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Professional Soft Washing

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Copper and Zinc Strips

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Algae-Resistant Shingles

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Written by

Alpha Eagle Roofing • Licensed Roofing Contractor • CA CSLB #1148511

Alpha Eagle Roofing is led by a Bay Area roofer with 15+ years of local field experience. Every article is written or reviewed by a licensed C-39 roofing contractor with direct project experience in the Bay Area’s unique climate and building codes.

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