Soft wash · Gaylord & lakefront northern Michigan

Roof soft washing in northern Michigan

Those black streaks running down your roof are alive. Blasting them off damages the shingle and they come right back. We treat them so they die at the root — safely, with no pressure on the roof.

What the black streaks actually are

That staining is Gloeocapsa magma, a hardy blue-green algae that feeds on the limestone filler in asphalt shingles. It shows up first on north and shaded slopes, spreads across the roof, and holds moisture against the shingle — shortening its life. It is not dirt, and it will not rinse off.

Low-pressure treatment, not a power wash

Pressure-washing a roof strips the protective granules and can void your shingle warranty. We apply a soft-wash treatment that kills the algae and mold at the root; it then rinses and weathers away without a single high-pressure pass. The roof is protected, the warranty is protected, and the streaks don't come racing back.

How we do it

Four steps, no surprises.

  1. 01
    Inspect

    We check slope, shingle condition and the worst-affected faces, and confirm the approach.

  2. 02
    Protect

    Landscaping and gutters below are pre-wet and protected before any solution goes up.

  3. 03
    Soft-wash treat

    Low-pressure application that kills the growth — no walking-and-blasting that wears the roof.

  4. 04
    Rinse & check

    Controlled rinse and a final look so you know exactly what changed.

What it costs

Roof soft washing is priced by roof surface at our standard rate. Use the instant quote for a range — confirmed on site.

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Questions

Roof soft washing — straight answers.

Will this damage my shingles?
No — the opposite. We never high-pressure a roof. The soft-wash treatment removes the algae without stripping granules, which is what protects both the shingle and your warranty.
How long until the streaks are gone?
The treatment kills the algae on contact; the staining lightens and continues to clear as it weathers off over the following weeks.
How often does a roof need this?
Most northern-Michigan roofs go several years between treatments, sooner on heavily shaded north slopes.

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