How Often Should You Get Your Roof Cleaned? A Homeowner’s Guide

March 28, 2025

Your roof is one of the most important investments in your home, yet it’s often overlooked when it comes to regular maintenance. Many homeowners only think about their roof when a leak appears—but by then, costly damage may have already occurred.

So, how often should you have your roof professionally cleaned? It depends on several factors.

Factors That Affect Roof Cleaning Frequency

Climate & Weather Conditions
  In  Seattle-Tacoma’s wet and rainy climate, moss and algae thrive, meaning homeowners here need  more frequent roof cleanings  compared to drier regions.

Tree Coverage Around Your Home
If you have  overhanging trees, your roof is more susceptible to  leaf debris, moss, and algae growth. The more shade your roof has, the  more moisture gets trapped, accelerating buildup.

Roof Material & Age
Different materials have different cleaning needs:

  • Asphalt shingles (most common) – Needs cleaning every 12-24 months
  • Tile roofs – More durable but can still collect moss & algae, requiring cleaning every 2-3 years
  • Metal roofs – Lower maintenance but may still require occasional cleaning

Visible Signs of Dirt & Growth
Even if it hasn’t been a full year since your last cleaning, watch for these signs that your roof needs attention:
   ⚠️ Dark streaks or discoloration
⚠️ Green patches of moss or algae
⚠️ Debris buildup from trees
⚠️ Water pooling or leaks inside your home

The Benefits of Regular Roof Cleaning

✔️  Extends Roof Life – A well-maintained roof lasts  years longer, saving you thousands in replacement costs.
✔️  Prevents Costly Repairs – Early cleaning prevents  shingle damage and leaks.
✔️  Boosts Curb Appeal – A clean roof instantly makes your  home look newer and well-kept.
✔️ Improves Energy Efficiency – Removing algae buildup  reduces heat absorption, lowering cooling costs.

Get Your Roof Cleaned the Right Way!

At Precision Pro Wash, we use safe, soft washing techniques to gently remove moss and algae without damaging your shingles.


Not sure if it’s time for a roof cleaning? Contact us today for a free inspection!

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