
ROOF CLEANING
Professional Roof Cleaning in Northern Virginia
Safely remove black streaks, algae, moss, and organic growth with professional roof cleaning in Northern Virginia. WashBoss Exteriors uses a low-pressure soft washing process designed to restore your roof's appearance without the damaging pressure of traditional pressure washing.

Why Soft Washing Is Best for Roof Cleaning in Northern Virginia
Soft washing removes black streaks, algae, moss, lichen, and other organic growth without blasting your shingles with high pressure. Our low-pressure treatment targets the growth at its source while helping protect your shingles and restore a cleaner appearance.



Low-Pressure Cleaning
Treats Organic Growth
Protects Your Roof
How We Safely Soft Wash Your Roof
01
Property Prep
We inspect the roof and surrounding property before beginning. Plants and landscaping are thoroughly pre-wet and protected throughout the cleaning process.
02
Apply Roof Treatment
Our low-pressure system applies a professional cleaning solution designed to treat black streaks, algae, moss, and lichen at the source.
03
Treatment Dwell Time
The treatment is given time to work on the organic growth. Black streaks begin disappearing quickly, while heavier moss and lichen will turn white and may take longer to release.
04
Final Rinse & Cleanup
We thoroughly rinse and protect surrounding landscaping and clean up the property. Any remaining dead moss or lichen left on the roof will naturally break down and release over time.

See the WashBoss Difference

BEFORE

AFTER

BEFORE

AFTER
What We Remove From Your Roof

Black Streaks & Algae
We treat the dark streaks and discoloration caused by organic growth, restoring a cleaner, more uniform appearance.

Moss & Lichen
Our roof treatment kills moss and lichen at the source. Heavier growth may turn white after treatment and naturally release from the roof over time.

Other Organic Buildup
Our soft wash treatment targets organic buildup without relying on damaging high pressure.

Roof Soft Washing FAQs
Will the moss and lichen disappear immediately after the treatment?
Our specific treatment kills organic growth at the source, but we avoid high-pressure methods that force materials off and risk shingle damage. Consequently, you will notice moss and lichen turning white as they die. Natural elements like rain and wind will then gently wash them away over time instead of an artificial, instant removal. This approach ensures your roof remains intact while becoming completely clean.
Is soft washing safe for asphalt shingles?
Yes. Our roof cleaning process uses a low-pressure application specifically designed for asphalt shingles. The cleaning solution targets algae, moss, lichen, and other organic growth without the damaging high pressure associated with traditional pressure washing.
What causes the black streaks on my roof?
Those dark streaks are typically caused by Gloeocapsa magma, a type of algae that grows on asphalt shingles. Our roof treatment targets this organic growth at its source to restore a cleaner, more uniform appearance.
How often should a roof be soft washed?
There's no set schedule for every home. Roofs should generally be treated when black streaks, algae, moss, or lichen begin to become noticeable. Shade, surrounding trees, moisture, and roof exposure can all affect how quickly growth returns.