How California's Climate Affects Your Roof
California's mediterranean climate is gentle on roofing compared to most of the country — but it has its own specific concerns. Long, dry summers mean fire-resistant roofing is required in many high-risk areas of California, often by ordinance. Wet winter months bring extended moisture exposure that can promote moss and algae growth on poorly-ventilated roofs, and proximity to the coast adds salt air to the mix.