Black-Streaked Shingles – Roof Algae
Shingles on many homes are now showing streaky, black stains for the first time. This roofing problem has escalated in past years and appears out of the blue on the roof. Roof algae has overtaken the roofing shingles - but there is a solution. Clean your roofing shingle with oxygen bleach and add copper or zinc strips. Here's why your shingles are suffering.