P91 Roofing & Construction logo
P91 Roofing
Roof Soft Washing

Restore your roof — without damaging it.

High-pressure washing strips granules and shortens roof life. Soft washing uses low pressure and roof-safe cleaners to remove black streaks, algae, moss, and mildew safely — and helps prevent regrowth.

What it removes

Years of buildup, gone — without taking shingles with it.

  • Black algae streaks (Gloeocapsa Magma)
  • Mold and mildew
  • Moss and lichen
  • Dirt and organic buildup
  • Roof staining and discoloration
Restored curb appeal

Years of black streaks and discoloration disappear in a single visit.

Extends roof life

Removing algae and moss stops the slow degradation of shingle granules.

Protects property value

A clean roof shows well in appraisals, inspections, and listing photos.

Safer than pressure washing

Low pressure and roof-safe solutions clean without loosening granules or voiding warranties.

Our process

Five careful steps. One clean roof.

  1. 01
    Roof evaluation

    We walk the roof and confirm soft washing is the right call for your shingle type and condition.

  2. 02
    Property protection

    We pre-wet and cover landscaping, A/C units, and finished surfaces before any solution is applied.

  3. 03
    Low-pressure application

    Roof-safe cleaning solution is applied with low-pressure equipment — no granule damage.

  4. 04
    Treatment and dwell

    The solution works through algae, moss, and mildew at the surface and below it.

  5. 05
    Final inspection

    We rinse, walk the roof one more time, and confirm the result with you.

Frequently asked.

Is soft washing safe for my shingles?

Yes. Low pressure and roof-safe cleaners are designed to clean without dislodging granules or voiding the manufacturer's warranty.

How long does the result last?

Results vary with weather, tree cover, and humidity, but most roofs stay clean for years after a proper soft wash.

Can it remove black streaks?

Yes — algae-driven black streaks are exactly what soft washing is built to remove.

Black streaks ruining your curb appeal?

We'll come look and tell you honestly whether soft washing will solve it.

Get a free estimate