Roof Cleaning Services in Snohomish, King & Skagit County, WA

Professional moss removal, soft washing, and roof treatment to protect your roof, extend its lifespan, and restore your home's curb appeal.

Moss Removal Soft Wash Algae Treatment Zinc Strip Install Debris Clearing Gutter Flush
Lake Stevens • Everett • Marysville • Seattle • Bellevue • Bothell • Arlington
Roof moss removal before and after by NW Property Maintenance in Snohomish County WA
Roof Cleaning

Protect Your Roof From Moss, Algae & Debris

The Pacific Northwest is one of the toughest climates for roofing. Constant moisture, shade, and organic debris create the perfect conditions for moss, algae, and lichen to take hold — slowly destroying your shingles, trapping moisture, and leading to costly repairs.

Our roof cleaning service removes moss and organic growth at the root, treats your shingles to prevent regrowth, and clears all debris so water flows freely. We use safe, low-pressure techniques that protect your roofing material while delivering dramatic results.

Our Roof Cleaning Process

A thorough, multi-step approach that cleans your roof today and protects it for the seasons ahead.

Moss & Debris Removal
  • Hand-scraping of thick moss from shingles, ridges, and valleys
  • Clearing of pine needles, leaves, and organic debris
  • Removal of moss from flashings, vents, and skylights
  • All debris collected and hauled away — nothing goes in your gutters
Soft Wash Treatment
  • Low-pressure application of eco-friendly cleaning solution
  • Kills moss, algae, and lichen spores at the root
  • Safe for composition, cedar shake, tile, and metal roofing
  • No high pressure that damages shingles or voids warranties
Prevention & Protection
  • Application of moss-prevention treatment to slow regrowth
  • Zinc strip installation along ridge lines for long-term protection
  • Tree limb trimming to increase sunlight and airflow on the roof
  • Recommendations for ongoing maintenance schedule
Gutter & Downspout Flush
  • Full gutter cleaning included with every roof cleaning service
  • Downspout flushing to ensure proper drainage
  • Inspection of gutter hangers and drainage flow
  • Prevents water backup and roof edge damage
Why Roof Cleaning Matters

Your Roof Is Your Home's First Line of Defense

A neglected roof doesn't just look bad — it actively deteriorates. Moss lifts shingles, traps moisture, and creates pathways for water to reach your decking and structure. A roof replacement costs $10,000 to $25,000. A professional cleaning costs a fraction of that and can add years to your roof's life.

Extend Roof Lifespan
Regular cleaning can add 5-10 years to your roof's life by removing the organisms that break down shingles.
Prevent Water Damage
Moss lifts shingle edges, allowing water to seep underneath and cause rot, mold, and structural damage to your home.
Boost Property Value
A clean roof instantly improves curb appeal. Essential if you're selling, refinancing, or just want your home to look its best.
Trusted by Hundreds
Roof cleaning is one of our most requested services. 4.9 stars on Google, 5.0 on Angi — clients trust us on their roofs.
NW Property Maintenance crew cleaning a residential roof in Lake Stevens WA

Ready to Protect Your Roof?

Get a free roof cleaning estimate. We serve residential and commercial properties across Snohomish, King, and Skagit counties.