Black streaks, moss, and grime aren’t just ugly, they CAN shorten your roof’s life. A gentle, low-pressure cleaning lifts them away, especially when paired with a Roof Maxx treatment for a brighter, longer-lasting roof. Roof cleaning is available in most local markets.
A local pro inspects your roof, identifies the staining and confirms the surface is sound enough to clean.
A low-pressure, shingle-safe treatment lifts away algae, moss, and grime without blasting the granules off.
Your roof looks years younger and pairs perfectly with a Roof Maxx treatment to keep it that way.
Pick what’s on your roof to see what it is, and why leaving it there costs you.
Those dark stains are Gloeocapsa magma — a hardy blue-green algae that feeds on the limestone filler in asphalt shingles.
The algae itself doesn’t damage the shingle directly, but it holds moisture against the roof and creates the damp conditions where moss and lichen take hold — and those do eat into the roof and shorten its life.
Spongy green moss takes hold in shaded, damp areas and lifts the edges of shingles as it grows.
Lifted shingles let water underneath, and the trapped moisture rots the decking and invites leaks.
Crusty, patchy lichen roots deep into the shingle surface and is much tougher than surface dirt.
As it digs in it pulls away protective granules, leaving bare spots that age and crack early.
Leaves, grit, and general grime collect in valleys and along the eaves, especially under trees.
Debris traps water, clogs drainage, and creates the damp, shaded conditions that algae and moss love.
Years of sun, pollen and organic staining leave the whole roof looking gray, blotchy, and tired.
It reduces curb appeal and can be an eyesore for buyers, appraisers, and the HOA alike.
A clean roof looks great, but cleaning alone doesn’t restore the shingle. A professional cleaning works best applied alongside a Roof Maxx treatment, so your roof comes out both brighter and stronger.
Removes the black streaks, moss, and grime that dull and damage your roof.
Restores the shingle and can add up to 5 years of life per treatment.
Looks new again — and is protected to stay that way longer.
ROOF AGE
old roof revived
low-pressure, no blasting
for pets and people
No. A professional roof cleaning uses a gentle, low-pressure, shingle-safe method — not high-pressure blasting, which strips the protective granules and shortens a roof’s life. The goal is to clean the roof without wearing it down.
Those streaks are an algae called Gloeocapsa magma. The algae doesn’t damage the shingles directly, but it holds moisture against the roof and creates the damp conditions that let moss and lichen take hold — and those do eat into the roof. That’s why it’s worth removing, not just for looks.
Ideally both. Cleaning removes the staining, algae, and moss; a Roof Maxx treatment then restores the shingle’s flexibility and water resistance. A professional cleaning works best paired with a Roof Maxx treatment for a brighter, cleaner, longer-lasting roof.
It depends on your climate, shade, and tree cover, but many homes benefit from a clean every few years — and any time algae streaks or moss start to show. Your local pro can recommend a schedule during the free Roof Health Check.
A local pro, a Roof Health Score, and a clear plan. No obligation.
Local pro, exact measurements, and an itemized quote. No obligation.
or call (800) 720-6172
