Professional Service
Roof Cleaning Services
Protect Your Roof Investment with Professional Care
Our gentle soft-wash roof cleaning safely removes ugly black streaks, moss, algae, and lichen while extending your roof's lifespan by years.
About This Service
Professional Roof Cleaning in Northern Virginia
Those dark streaks and green patches on your roof aren't just unsightly – they're actually living organisms eating away at your shingles. Gloeocapsa Magma (the algae causing black streaks) and moss can significantly shorten your roof's lifespan if left untreated. Our professional roof cleaning service uses industry-approved soft wash techniques recommended by shingle manufacturers. We apply specialized cleaning solutions that kill algae, moss, and lichen at the cellular level, then gently rinse everything away. The result is a roof that looks brand new and is protected from further organic growth for years to come. Never use pressure washing on a roof – it voids most warranties and damages shingles.
15+
Years Experience
Why Choose Our Service
Benefits of Professional Roof Cleaning
Extends roof lifespan by 5-10 years on average
Manufacturer-approved soft wash method preserves warranty
Prevents costly premature roof replacement
Removes ugly black streaks (Gloeocapsa Magma algae)
Improves home's curb appeal dramatically
No high pressure that can damage shingles
Kills and removes moss, lichen, and mildew
Increases energy efficiency by restoring reflectivity
Results visible immediately, continues improving
Real Results
See the Roof Cleaning Difference
Don't just take our word for it – see the dramatic transformation our professional roof cleaning delivers.
Before
After
Why Douglas Exterior Cleaning
The Right Choice for Roof Cleaning
We're committed to delivering exceptional results with every job.
Fully Insured
Complete liability coverage for your peace of mind
On-Time Service
We respect your schedule and arrive as promised
100% Satisfaction
We're not happy until you're thrilled with results
5-Star Rated
Trusted by hundreds of satisfied customers
Our Process
How We Deliver Roof Cleaning
Roof Assessment
We inspect your roof condition, identify problem areas, and document any existing damage before cleaning begins.
Soft Wash Treatment
We apply our specialized cleaning solution that kills organic growth at the root without damaging shingles.
Natural Rinse
Rain naturally rinses the treated roof over the following weeks, revealing a like-new appearance.
Service Coverage
Roof Cleaning Across Northern Virginia
Douglas Exterior Cleaning proudly serves homeowners and businesses throughout Northern Virginia with professional roof cleaning services.
Northern Virginia
Arlington VA
Lorton VA
Alexandria VA
Woodbridge VA
Northern Virginia
Arlington VA
Lorton VA
Alexandria VA
Woodbridge VA
Free Estimates
No obligation quotes
Competitive pricing
Same-day response
Flexible scheduling
Common Questions
Roof Cleaning FAQs
Is roof cleaning safe for asphalt shingles?
Yes! Our soft wash method is the only technique recommended by shingle manufacturers like GAF, CertainTeed, and Owens Corning. Unlike pressure washing, soft washing won't damage shingles or void your warranty.
What causes the black streaks on my roof?
Black streaks are caused by Gloeocapsa Magma, a type of blue-green algae that feeds on the limestone filler in asphalt shingles. It spreads across your roof and can significantly reduce its lifespan if untreated.
How long do roof cleaning results last?
Most roofs stay clean for 3-5 years after our treatment, depending on environmental factors like shade, humidity, and nearby trees. We offer maintenance treatments to extend results.
Will cleaning damage my landscaping?
We take extensive precautions to protect your plants, including pre-wetting landscaping and using plant-safe products. We've never damaged a customer's landscaping.
How quickly will I see results?
You'll see immediate improvement after cleaning. For heavily affected roofs, results continue to improve over 2-4 weeks as rain naturally rinses away the remaining dead organic matter.
Ready for Professional Roof Cleaning?
Get a free, no-obligation quote today and discover why Northern Virginia homeowners trust Douglas Exterior Cleaning.
