Professional Roof Washing Services
Black streak, moss and lichen removal with a gentle soft wash that protects your shingles. Locally owned, licensed and insured
- Licensed & insured
- Free, no-obligation quotes
- Open 7 days, 9 AM to 5 PM
- 100% satisfaction guaranteed
- Locally owned in Manassas
What Northern Virginia Homeowners Say
What Is Roof Washing?
Roof washing, also called roof cleaning, is the safe removal of black streaks, algae, moss, lichen and dirt from your roof using a low-pressure soft wash. AllPro PowerWashing cleans asphalt shingle, tile and metal roofs across Northern Virginia without the high pressure that strips protective granules and shortens a roof’s life.
Those black streaks are not dirt. They are a type of algae that feeds on asphalt shingles, and Northern Virginia’s shade trees and humid summers give it everything it needs to spread. We apply a cleaning solution made for roofs, give it time to kill the growth at the root, and rinse gently where needed, so the roof looks years younger and stays clean longer. A clean roof makes a freshly washed house look even better, so many customers pair it with house washing, and we can clear leaves with gutter cleaning while we are up top. Every job starts with a free quote and a clear price.
Signs Your Roof Needs Cleaning
Here is what to look for:
- Black or dark streaks running down the shingles, usually on the north side
- Green moss growing between shingles or along the edges
- Gray, crusty lichen spots that look like small patches of paint
- A roof that looks older or darker than it really is
- Leaves, pine needles and debris collecting in valleys and corners
- Streaks or growth showing up in listing photos before a sale
Seeing any of these? Read our guide to the 7 signs your roof needs professional cleaning, or see how a clean roof can help when you are getting ready to sell.
Roofing Materials We Clean
Every roof gets a soft wash matched to its material:
- Asphalt shingles: a gentle solution and low-pressure rinse that keep the protective granules in place.
- Architectural shingles: the same soft wash, with extra time on heavy streaking.
- Tile roofs: cleaned without walking on fragile tiles where it can be avoided.
- Metal roofs: a solution that lifts algae and oxidation film without scratching the finish.
- Moss and lichen: treated so they die at the root and release over the following weeks.
- Roof valleys and edges: cleared of leaves and debris with a roof blow-off.
Want to know the difference between the methods? Read pressure washing vs. soft washing, and see real results in our before and after gallery.
How Often to Schedule Roof Washing
Most Northern Virginia roofs need a cleaning every few years. Use this as a guide:
- Every 2 to 3 years: for roofs under heavy trees or on the shaded side of the house.
- Every 3 to 5 years: for roofs that get good sun.
- Before selling: a clean roof makes the whole house look better kept in photos and showings.
- As soon as you see moss: because moss holds moisture against the shingles.
Not sure where your roof falls? We will tell you honestly after a look, and it costs nothing to ask.
Complete the job
Pairs Well With Roof Washing
Where We Offer Roof Washing
We provide roof washing across Northern Virginia, from Arlington and Alexandria to Manassas and Prince William County. Pick your town for local details, neighborhoods and FAQs:
Alexandria · Annandale · Arlington · Bristow · Burke · Centreville · Chantilly · Clifton · Fairfax · Falls Church · Gainesville · Great Falls · Herndon · Lorton · Manassas · Manassas Park · McLean · Oakton · Prince William County · Reston · Springfield · Tysons · Vienna · Woodbridge
Don’t see your town? See every area on our service area page or call us at 571-364-4466.
Frequently Asked Questions
What are the dark streaks on my roof?
Dark streaks on shingles are usually algae. They start as a cosmetic problem, but left alone they can hold moisture against the roof and make it look older than it is. A professional roof wash removes them and brightens the roof.
Is roof washing safe for my shingles?
It is when done with a low-pressure soft wash method. High pressure can strip protective granules from shingles, so we use a gentle cleaning solution and low pressure instead, which lets the solution do the work.
How often does a roof need to be washed?
Many roofs need cleaning every few years. Roofs under heavy tree cover or on the shaded side of a home tend to grow algae faster, so they may need it sooner. We can advise after taking a look.
Should I wash my roof before selling my home?
It is a smart way to boost curb appeal. A clean roof makes the whole house look better kept in photos and showings. Many sellers pair it with house washing for a complete refresh.
Do you clean tile and metal roofs?
Yes. Along with asphalt shingles, we soft wash tile and metal roofs, adjusting the cleaning solution and rinse to each material so the finish is not damaged.
Will the black streaks come back?
Over time, yes, because the algae spreads on the wind. A soft wash kills the existing growth at the root, so most roofs stay clean for a few years, longer on sunny roofs and shorter under heavy trees.
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