You've noticed dark streaks running down your shingles and wondered if your roof needs replacing. Good news: those streaks are almost always airborne algae, not roof failure - and we can wash it away in a single visit. If DIY roof cleaners, bleach spray and pressure washers have only made things worse, you're in the right place. We use manufacturer-approved soft washing that erases streaks the same day you call.
What Roof Cleaning Problems Do You Have?
The dark streaks on Takoma Park roofs are caused by gloeocapsa magma, a hardy algae that thrives in the humid, tree-shaded DMV climate. Left alone, it feeds on the limestone filler in shingles and slowly destroys them. Moss and lichen are worse - their root systems lift shingle edges and trap moisture underneath.
Warning signs you need a professional roof cleaning: black or green streaks running downhill from vents and chimneys, patchy green moss along the ridge line, or lifted shingles at the eaves. DIY high-pressure washing strips protective granules and voids most shingle warranties, and off-the-shelf bleach can kill your landscaping. Our licensed technicians use low-pressure application with the correct dwell time and rinse - safe for your roof, plants, pets and gutters.
Our Roof Cleaning Services
Roofs are not one-size-fits-all. We match the technique to your roofing material and the type of growth on it.
For most homes, our Soft Wash Roof Cleaning is the standard treatment - a low-pressure application that lifts algae, moss and lichen without touching shingles. On common architectural shingles, we typically book Asphalt Shingle Roof Cleaning, which restores color and adds years of life. Because it uses no high pressure, it qualifies as manufacturer-approved Low-Pressure Roof Cleaning and won't void your shingle warranty.
Wood roofs need extra care. Our Cedar Shake Roof Soft Washing uses adjusted chemistry that cleans without drying out or cracking the wood.
When staining or biological growth is severe, we escalate. Our Algae Stain Removal from Roof Shingles service targets the black streaks specifically, while Moss & Lichen Removal from Roof kills root systems so growth doesn't come back next spring. Every service includes plant protection and a full landscape rinse afterward.
Roof Cleaning for Takoma Park Homes & Businesses
Takoma Park's tree canopy is beautiful, but it's also why local roofs grow moss and lichen faster than the national average. Shade holds moisture, and moisture feeds growth. Homes backing to Sligo Creek or the Long Branch stream valley are hit hardest.
We clean roofs across Takoma Park, Silver Spring, Bethesda, Kensington and throughout Montgomery County MD, Prince George's County MD, Howard County MD, Frederick County MD, Anne Arundel County MD, Baltimore County MD, Carroll County MD, plus Arlington VA, Alexandria VA and Fairfax VA. Local experience matters - we know which shingle brands are common in each neighborhood and how tree cover and slope affect drying and dwell time.
Why Choose Us for Roof Cleaning
Affordable Pressure Washing is a Licensed & Insured Pressure Washing Company that's Locally Owned & Operated in Takoma Park. Every roof job is backed by our Satisfaction Guarantee and executed by technicians trained on low-pressure application. We're 5-Star Rated by Local Homeowners for fast response, on-time crews and upfront written pricing.
Same-day quotes are the norm. In many cases we can wash your roof within 24 to 48 hours of your first call.