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Roof Cleaning for Cedar Shake Roofs in Your Area

Soft wash for cedar shake roofs. Soft wash roof cleaning that removes black streaks, moss and lichen without the granule damage pressure washing causes. Typical cost $400-$1,000.

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Grime, mildew and stains build up a little at a time until one day the outside of your property looks years older. Roof Cleaning for Cedar Shake Roofs in your area brings it back, usually in a single visit. With cedar shake roofs, the right approach is soft wash.

How we clean it

Soft washCleaning method
Soft wash onlyPressure

Cleaning solution: A wood-safe roof cleaning solution, sometimes followed by a brightener and preservative.

Cleaning cedar shake roofs safely

Cedar shakes grow moss and lichen and turn gray as the wood weathers. Cleaning removes growth and lets the roof dry faster, and many owners follow it with a preservative treatment.

Avoid: High pressure, which erodes and splits the wood and shortens the roof's life.

How often: Every 2-4 years.

Is it time for roof cleaning for cedar shake roofs?

  • Black or dark streaks running down the roof
  • Green moss or lichen spots, often on the north side
  • Roof looks older than it is
  • Moss lifting the edges of shingles
  • A home inspector or insurer has noted roof growth

What causes the dirt and stains

  • Roof algae (often Gloeocapsa magma) spread by wind
  • Shade from trees and the north-facing side staying damp
  • Debris piles in valleys that hold moisture
  • Moss and lichen that root into the roof surface

What you can do yourself

  • Keep valleys and gutters clear of leaves and pine needles
  • Trim branches to let in sun and air
  • Consider zinc or copper strips near the ridge to slow regrowth
  • Look from the ground with binoculars instead of climbing on the roof

Not sure what you're looking at? The free stain identifier and safe pressure guide explain each stain and surface.

Why more pressure isn’t better

  • Pressure washing strips granules and can void a shingle warranty
  • Falls from a slippery, wet roof
  • Chemical runoff that burns plants below
  • Water forced under shingles and flashing

What happens on the day

  1. Check the roof type, pitch and condition from the ground and ladder
  2. Pre-wet and protect plants and cover sensitive areas
  3. Apply a soft wash solution suited to the roofing material
  4. Let it work, then rinse gently or let rain finish the job as recommended
  5. Rinse gutters, downspouts and plants and check the results

How much does roof cleaning for cedar shake roofs cost?

$400-$1,000Typical range for a typical single-story or two-story home
2-4 hoursTypical time on site
Every 3-5 years, or when streaks returnRecommended frequency

What moves the price:

  • Size: square footage of siding, roof or flatwork
  • Condition: heavy growth, old stains and peeling finishes take longer
  • Access: number of stories, roof pitch, slopes and how close we can park
  • Add-ons: sealing, gutter brightening and other services done in the same trip

These are typical U.S. ranges, not a quote. You get an exact price before any work starts. For a quick estimate, try the pressure washing cost calculator.

Other services for cedar shake roofs

Roof Cleaning for Cedar Shake Roofs in your area

We provide roof cleaning for cedar shake roofs across all 50 states, Washington, DC and Puerto Rico. Pick your state to see local details:

Roof Cleaning for Cedar Shake Roofs: frequently asked questions

How much does roof cleaning for cedar shake roofs cost?

Roof Cleaning for Cedar Shake Roofs typically costs $400-$1,000 for a typical single-story or two-story home, and usually takes 2-4 hours. The exact price depends on the size and condition, and you get it before any work starts. Call (555) 010-0000 for a free quote.

Do you use high pressure for roof cleaning for cedar shake roofs?

For cedar shake roofs: soft wash only. What we avoid: high pressure, which erodes and splits the wood and shortens the roof's life. The cleaning solution does most of the work, followed by a gentle rinse.

Is roof cleaning for cedar shake roofs safe for my plants and pets?

We pre-wet plants and lawns, keep cleaning solutions diluted to what the surface needs, and rinse landscaping again when we finish. Keep pets and children inside until surfaces are rinsed and dry.

How often should I schedule roof cleaning for cedar shake roofs?

Every 2-4 years. Shade, nearby trees, humidity and heavy traffic mean more frequent cleaning; sunny, dry spots can go longer. Our free cleaning frequency tool gives a recommendation for your climate.

What if it rains on the day?

Light rain doesn't stop most washing, but heavy rain, high wind, lightning and freezing temperatures do. If the weather isn't right, we reschedule at no charge. Our work is backed by a satisfaction guarantee.

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Ready for a cleaner home or business?

Get a free pressure washing quote near you. Tell us what needs cleaning and we'll give you a price and the next available date.

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