Alpharetta, GA
Roof Cleaning in Alpharetta
Soft wash roof cleaning removes black streaks and algae without damaging shingles or voiding your warranty. Safe for all roof types.
Get a Free EstimateRoof Cleaning in Alpharetta, GA
The black streaks on your roof are Gloeocapsa magma — an algae that feeds on the limestone filler in asphalt shingles. It spreads over time, traps heat, and shortens the life of your roof. It's extremely common on Alpharetta homes with tree cover.
We use soft wash roof cleaning exclusively: low-pressure application of a biodegradable algaecide solution that kills the algae and removes the streaks without touching your shingles aggressively. High-pressure washing dislodges granules, can void your roof warranty, and forces water under shingles — we don't use it.
Results are visible immediately and last 2–3 years on average. We can also apply a protective treatment to slow regrowth.
Roof Cleaning — Common Questions
How much does roof cleaning cost in Alpharetta?
Most residential roofs run $300–$500 depending on size and pitch. Steep or complex rooflines take longer and cost more. Text us your address for a quote.
Does roof cleaning void my warranty?
Soft washing does not void most roof warranties — in fact, many manufacturers require algae removal as part of warranty maintenance. High-pressure washing is what voids warranties. We only use soft wash on roofs.
What causes the black streaks on my roof?
Black streaks are caused by Gloeocapsa magma, an algae that's airborne and extremely common in the humid Southeast. It feeds on the limestone in asphalt shingles and spreads from neighbor to neighbor over time. The only way to remove it is chemical treatment — pressure alone won't kill it.
How long do the results last?
Typically 2–3 years. Homes with heavy tree cover and north-facing roof sections may see regrowth sooner. We offer a preventive treatment at the time of cleaning that extends results.
Is roof cleaning safe for all roof types?
Soft washing is safe for asphalt shingles, metal roofs, tile, and slate. We adjust our solution and approach for each material. If you have an unusual roof type, mention it when you contact us.
Get a Free Estimate — Roof Cleaning
Tell us about your property and we'll get back to you as soon as possible.