Soft Wash Algae, Moss & Lichen Removal for Brookhaven Homeowners
Brookhaven is one of metro Atlanta's fastest-growing and most sought-after cities. Since incorporating in 2012, it has developed a strong identity built around its walkable corridors, upscale residential neighborhoods, and proximity to I-285 and Buckhead. The homes that line streets like Club Drive, Ashford Dunwoody Road, and the older tree-shaded blocks near Dresden Drive represent significant real estate investments. With those investments comes the responsibility of maintenance — and the roof, which faces the full force of Georgia's climate every single day, is one of the most critical systems to protect. Thrare Contracting provides professional soft wash roof cleaning services to Brookhaven homeowners and property managers, removing the algae, moss, and lichen that silently damage shingles and shorten roof life.
If you have driven through Brookhaven's residential neighborhoods, you have almost certainly noticed the dark streaking that appears on many roofs — running in long vertical bands down asphalt shingles from ridge to eave. Homeowners often assume this is dirt accumulation or shingle aging, but the culprit is almost universally Gloeocapsa magma, a cyanobacterium (blue-green algae) that thrives in Georgia's warm, humid conditions. The bacterium feeds on the limestone filler incorporated into asphalt shingles, and the dark pigment it produces is its own UV protection mechanism.
Beyond appearance, Gloeocapsa magma causes real structural damage. As the algae colonies expand, they retain moisture against the shingle surface, accelerating the granule loss that shortens asphalt shingle life. Brookhaven's tree canopy — particularly in the older sections near Lynwood Park and the neighborhoods bordering the City of Atlanta boundary — creates extended periods of shade that keep roof surfaces damp long after rain events, giving algae ideal conditions to spread rapidly across entire roof planes.
While algae streaking is largely a cosmetic and early-stage issue, moss and lichen represent more advanced and more destructive roof contamination. Moss establishes root-like structures called rhizoids that physically penetrate between shingles and into the substrate beneath. In Brookhaven's older neighborhoods — particularly the ranch-style homes and split-levels built in the 1950s through 1970s — moss growth is a common finding on roofs that have not been maintained. The rhizoids work as wedges, lifting shingle edges and creating pathways for water infiltration. A Georgia thunderstorm driving heavy rain against lifted shingles can push water under the roofline and into the sheathing, rafters, and attic space below.
Lichen is the most stubborn of the three. A symbiotic organism combining algae and fungus, lichen attaches to shingles via a structure that etches directly into the granule surface. It is extremely difficult to remove mechanically without damaging shingles — which is precisely why pressure washing is the wrong approach for roof cleaning. Lichen must be treated chemically, allowed to die, and then either rinsed away or left to weather off naturally over subsequent rain events. Our soft wash treatment penetrates lichen colonies and kills them at the root, producing results that last far longer than any scrubbing or pressure-wash approach could achieve.
Many homeowners and even some contractors still use high-pressure washers to clean roofs. This approach may seem fast and satisfying, but it causes measurable shingle damage on every application. Asphalt shingles are designed to hold their granules in place through adhesion — those granules are the primary UV protection layer and the main contributor to rated shingle lifespan. High-pressure water blasts granules off the shingle surface, effectively fast-forwarding the aging clock by years per cleaning session. Some warranties are voided entirely by pressure washing.
The soft wash method that Thrare Contracting uses applies a controlled low-pressure delivery of professional-grade cleaning solution — typically a sodium hypochlorite based formula with appropriate surfactants — that kills biological growth without any mechanical abrasion of the shingle surface. The chemistry does the work rather than the water pressure. This approach is endorsed by the Asphalt Roofing Manufacturers Association (ARMA) and is the standard recommended by most shingle manufacturers. Brookhaven homeowners can trust that our soft wash process cleans effectively while protecting the roofing investment they are trying to preserve.
Brookhaven's housing stock spans several decades of construction and a variety of roofing materials. The mid-century ranch homes and colonials that characterize neighborhoods like Brookhaven Heights and Murphey Candler Park predominantly carry architectural asphalt shingles — the most common material we encounter. Newer construction along the I-285 corridor and the townhome communities developed since incorporation often feature designer shingle profiles with enhanced algae-resistant granules, though even these benefit from periodic soft washing to maintain appearance and inspect for early biological colonization.
Some of Brookhaven's upscale properties feature tile roofs — either clay or concrete — which present their own maintenance requirements. Tile itself is highly durable and resistant to biological growth, but the gaps and crevices between tiles accumulate debris, and the grout lines on barrel tile assemblies can harbor moss and lichen just as readily as shingles. Cedar shake roofs, while less common, are also present in some of the city's older, established neighborhoods and require the most careful chemical approach of all, as shake is more porous and absorbs cleaning solutions differently than manufactured materials.
A single roof cleaning does not mean permanent results — Georgia's climate means biological growth will return over time. However, professional soft washing dramatically extends the interval between cleanings and gives you the opportunity to inspect the roof for early signs of shingle damage, flashing problems, or areas of chronic moisture retention. Many Brookhaven homeowners establish a cleaning schedule every two to three years as part of their overall property maintenance program, keeping roofs looking fresh and identifying issues before they become expensive repairs.
We also advise on preventive measures that extend clean-roof longevity. Zinc or copper strips installed along the ridge release trace amounts of metal ions with every rain event, creating an environment hostile to algae and moss regrowth. Trimming tree branches that overhang the roof reduces shade, speeds drying time after rain, and limits organic debris accumulation — all factors that slow biological colonization.
Thrare Contracting serves all of Brookhaven's neighborhoods, from the dense residential blocks near Oglethorpe University to the newer townhome and single-family developments near Town Brookhaven. We also serve neighboring communities throughout DeKalb County — see our roof cleaning Decatur and roof cleaning Dunwoody pages for nearby coverage. For complete exterior cleaning, visit our pressure washing Brookhaven page. As a minority-owned business operating out of Stone Mountain, we are fully insured and committed to professional results on every roof we clean.
Call or email today. Fast response, transparent pricing, and soft wash results that protect your roof and restore curb appeal.