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What Causes Black Streaks on Georgia Roofs?
Roof Cleaning • 5 min read

What Causes Black Streaks on Georgia Roofs?

A homeowner’s guide to roof algae, shaded areas and safe low-pressure cleaning.

A homeowner’s guide to roof algae, shaded areas and safe low-pressure cleaning.

Those streaks are more than dirt

Dark roof streaks are commonly connected to organic growth that thrives in humid conditions.

Why Georgia roofs are vulnerable

Warm temperatures, moisture, shade and nearby trees can create ideal conditions for recurring roof discoloration.

Why high pressure is the wrong tool

Aggressive washing can be inappropriate for shingles. A controlled roof soft-washing treatment is designed around the sensitivity of roofing materials.

When to request an evaluation

If streaking is spreading or reducing curb appeal, have the roof assessed before trying a do-it-yourself chemical or pressure treatment.

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