Basic
$0.31 – $0.67 per sq ft
Low-pressure soft wash with one oxygen-based cleaner application, loose moss brushed off, nearby plants pre-wetted and rinsed
Rendering: BuildX
How Much Does Clean a Cedar Shake Roof Cost in Washington, District of Columbia?
Professional low-pressure/soft-wash cleaning of a cedar shake roof (moss and algae removal), per sq ft of roof; preservative treatment extra.
Clean a Cedar Shake Roof in Washington, District of Columbia typically costs $0.37 to $0.78 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Clean a Cedar Shake Roof in Washington, District of Columbia
$0.37 – $0.78
per sq ftPrices in Washington are 5.0% higher than the national average for clean a cedar shake roof.
National average: $0.35 – $0.75 per sq ft
What you get at each price level
Standard
$0.37 – $0.78 per sq ft
Soft wash with oxygen-based cleaner and proper dwell time, moss hand-raked from shake gaps, low-pressure rinse, plantings protected
Premium
$0.46 – $0.98 per sq ft
Two-pass soft wash with longer dwell, moss hand-cleared from gaps and ridge, wood brightener rinse to even the color, plants covered
Cost Breakdown in Washington
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.17 – $0.35 | sq ft |
| Labor | labor | $0.12 – $0.28 | sq ft |
| Supplies & Other | supplies | $0.04 – $0.08 | sq ft |
| Equipment & Disposal | equipment | $0.03 – $0.07 | sq ft |
Prices adjusted for Washington local market conditions.
Clean a Cedar Shake Roof photo examples
Cedar shake roof with a cleaned section beside a mossy section
Rendering: BuildX
Find a pro to do thisHand scraper removing moss from between cedar shakes
Rendering: BuildX
Find a pro to do this
Cost Factors in Washington, District of Columbia
What Affects Pricing
- Materials ($0.16-$0.33 per square foot)
- Labor ($0.08-$0.16 per square foot)
- Supplies & Other ($0.04-$0.08 per square foot)
- Equipment & Disposal ($0.03-$0.07 per square foot)
Local Price Adjustments
Material costs5.0% above avg
Labor costs4.0% above avg
Frequently Asked Questions
References
- This Old House: Roof Cleaning Cost, This Old House, retrieved Nov 2026
- Construction wages by metro and rural area, used for the labor adjustment by ZIP code, U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025
- Regional price parities for goods, used for the materials adjustment by ZIP code, U.S. Bureau of Economic Analysis, 2024
Get Free Estimates in Washington
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