September 2026

Those dark, ugly streaks creeping across your shingles are more than just an unsightly stain diminishing your home’s appearance. Many homeowners assume those black streaks are merely dirt, soot, or pollution, but they are almost always Gloeocapsa magma, an aggressive species of cyanobacteria (commonly known as blue-green algae) that actively feeds on the limestone filler

If your stucco has gone from warm beige to streaky gray, the fix is almost never more pressure. Soft washing homes with stucco or synthetic finishes uses low-pressure water and a specialized cleaning solution that dissolves the algae causing those black streaks, instead of blasting the surface until it chips. High-pressure washing on porous stucco