Why is roof cleaning important?
Moss, algae, and debris trap moisture on your roof, leading to premature deterioration, leaks, and costly repairs. Regular cleaning extends your roof’s lifespan, improves energy efficiency, and enhances curb appeal.
What makes soft washing different from other roof cleaning methods?
Soft washing is a low-pressure cleaning method that applies a proprietary solution to kill moss, algae, and bacteria at the root. Unlike pressure washing, which can damage roofing materials, or powder treatments that take time to activate, soft washing safely eliminates organic growth while preserving your roof’s integrity.
Read more about pressure washing vs soft washing methods here.
Does roof soft washing remove moss immediately?
Soft washing kills all moss and organic growth on contact, but the moss remains attached to your roof until natural rain and weather gradually wash it away. This process typically takes a few weeks to a few months, depending on the thickness of the moss.
At Moss Doctors, we take extra time to remove areas with thicker moss by hand, ensuring faster results. This means that while lighter moss will dry out and flake off naturally, heavier growth is addressed immediately to speed up the clearing process and leave your roof looking cleaner sooner.
Should I pressure wash my roof?
No! Pressure washing your roof can:
❌ Strip protective granules from shingles, reducing your roof’s lifespan.
❌ Force water under shingles, leading to leaks, mold, and structural damage.
❌ Spread moss spores, causing it to regrow even faster.
Soft washing, on the other hand, kills moss at its root without damaging your roof.
How does soft washing compare to powder treatments?
Powder treatments rely solely on rain to activate and slowly work over time. Soft washing kills moss instantly and allows it to break down naturally, speeding up the process while preventing regrowth for much longer.
Will soft washing harm my plants or landscaping?
No! While our cleaning solution is powerful against moss, we take extra precautions to protect your landscaping. Our team thoroughly pre-soaks plants before and after treatment, ensuring they remain safe while your roof receives a deep, effective clean.
How long does a soft wash last?
Soft washing not only cleans but also treats your roof to prevent future moss growth. While powder treatments require frequent reapplications, soft washing can keep your roof cleaner for two to four times longer, meaning fewer cleanings over time.
How often should I have my roof soft washed?
For homes in the Pacific Northwest, where moss thrives, we recommend soft washing every 2-3 years to prevent heavy buildup. Homes surrounded by trees or in damp environments may benefit from more frequent treatments.
Will soft washing void my roof warranty?
No! Most shingle manufacturers recommend soft washing as the safest way to clean a roof. Pressure washing and harsh chemicals can void warranties—soft washing preserves the integrity of your shingles while keeping them moss-free.
How long does it take to soft wash a roof?
Most soft wash treatments are completed in just a few hours, leaving no mess, no damage, and no disruption to your home. While moss may take weeks or months to fully clear, it’s completely dead after our treatment and will naturally fall off with rain and wind.
