When we handle soft washing for cedar shake roofs in St. Louis, MO, it comes down to three things: protecting your plants and property, cleaning with the right method, and walking the job with you at the end. With cedar shake roofs, the right approach is soft wash.
Method and pressure
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 soft washing for cedar shake roofs?
- Green, black or gray film on siding, especially on the north side
- Black streaks running down the roof
- Moss or lichen on shingles or tile
- A musty smell around shaded walls
- Pressure washing would damage the surface
Where the grime comes from
- Algae, mold and mildew that grow in shade and humidity
- Roof algae that feeds on the limestone filler in shingles
- Pollen and dust that give growth something to hold on to
- Sprinklers and gutters that keep walls damp
Safe steps for homeowners
- Trim back branches and shrubs that touch the house so walls can dry
- Keep gutters clear so water doesn't overflow down the siding
- Spot-clean small areas with a soft brush and mild detergent
- Aim sprinklers away from the house
Not sure what you're looking at? The free stain identifier and safe pressure guide explain each stain and surface.
Common mistakes to avoid
- Using too strong a mix, which can burn plants and fade surfaces
- Using too weak a mix, which leaves growth alive and it returns quickly
- Climbing ladders with a spray wand and chemicals
- Mistaking soft washing for 'pressure washing on low'
Our process for soft washing for cedar shake roofs
- Identify the surfaces and the type of growth
- Pre-wet plants, cover sensitive fixtures and close windows
- Apply a solution mixed for the surface and let it dwell
- Rinse at low pressure from the top down
- Rinse plants again and check every side with you
Typical soft washing for cedar shake roofs prices
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
Local soft washing for cedar shake roofs for St. Louis, MO
Humid summers in Missouri grow green algae and black mildew on the shaded sides of homes, especially on vinyl and painted wood. A soft wash kills the growth rather than just knocking it off, so the siding stays clean longer.
Crews serve all of St. Louis (ZIP codes 63101, 63102, 63103, 63104, 63105 and more), plus East Saint Louis, IL (2.5 mi), Cahokia, IL (3.9 mi), Madison, IL (4.4 mi) and Centreville, IL (5 mi). Call (555) 010-0000 for a free quote in St. Louis.
Soft Washing for Cedar Shake Roofs: frequently asked questions
How much does soft washing for cedar shake roofs cost in St. Louis, MO?
Soft Washing for Cedar Shake Roofs typically costs $300-$800 for a typical single-family home exterior, 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 soft washing 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 soft washing 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 soft washing 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.