What Causes Roof Leaks? A Bay Area Diagnostic Guide

Nine out of ten roof leaks originate at flashing, not shingles. Here’s how to diagnose where your leak is coming from and what the repair typically costs.

Flashing Failures

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Cracked Pipe Boots

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Valley Water Intrusion

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Ridge Cap Lifting

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Skylight Seals

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Gutter Overflow

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Condensation vs. Active Leak

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Cost to Repair Each Type

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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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