Algae streak removal
Black algae streaks are removed with a low-pressure soft wash so the roof color comes back.
Exterior Services
Roof Cleaning Ridgewood, NJ
A roofer in Ridgewood can clean black algae streaks, lichen and grime off a roof using a low-pressure soft wash that does not strip shingle granules, while protecting plants, siding and gutters below. Dial (551) 370-0363 to talk with a local roofer about cleaning your roof.
The black or dark green stains on most roofs are a hardy algae that spreads on the wind and grows on the shaded, damp parts of the roof. As it spreads, it darkens the roof in long streaks, usually starting on the north side or under trees. It is mostly a cosmetic problem at first, but lichen and moss tend to move in alongside it, and those do damage shingles over time.
Cleaning a roof the wrong way can do more damage than the algae ever would. High-pressure spray tears granules off shingles and can break tile, so the safer method is a soft wash. With a soft wash, the cleaning solution does the work, not water pressure.
Some quick observations make the first conversation easier. Note whether the stains are black streaks, green patches, gray or crusty spots of lichen, or clumps of moss, and which slopes they cover. Mention the roof material, its age and whether gardens or delicate plants sit right below the eaves.
Depending on what the roofer finds, roof cleaning in Ridgewood, NJ can go hand in hand with roof moss removal and gutter cleaning.
Dealing with this in Ridgewood, NJ right now? Call (551) 370-0363 to talk to a local roofer.
Call nowThe process
What happens during a roof cleaning
Good roof cleaning is gentle on the roof and careful with everything below it.
Check the surface
An inspection shows what is growing on the roof and whether any repairs should come first. A roof in poor shape may need repairs before cleaning.
Protect the yard
Landscaping below the eaves is soaked with fresh water so it does not absorb the cleaning solution. Siding and windows are rinsed to keep the solution from drying on them.
Treat the roof
A cleaning solution matched to the roof material is applied at low pressure, from the bottom of the slope up. Dwell time matters more than pressure.
Clear the debris
After the solution works, loose debris is swept from valleys and the gutters are cleared. Lichen often releases over time after it dies.
Rinse the plants
Plants, siding and walkways are rinsed again with clean water, and the roof is checked one last time. The roofer notes any shingles or flashing that need repair.
What is included
Roof cleaning a roofer can handle
Regrowth prevention
Preventive strips are fitted below the ridge cap after the roof is cleaned.
Valley clearing
Built-up debris is swept off the roof to stop water from backing up.
Lichen removal
Crusty lichen is treated so it dies and releases from the shingles instead of being scraped off.
Metal roof cleaning
Concrete and clay tile roofs are cleaned with care to avoid cracking so the surface is not harmed.
Related service
Roof Soft Wash Ridgewood, NJ
A soft wash treats the roof with a diluted cleaning mix at about the pressure of a garden hose. The cleaning mix breaks down the growth and its root structure, not just the visible stain. Killing the growth at the root slows how fast it returns.
For Ridgewood roofs, soft washing is the method most roofers recommend over pressure washing. Gardens below the eaves are soaked first and rinsed again at the end. Expect algae to clear first and crusty lichen to fade over the following weeks.
Related service
Roof Cleaning Service Ridgewood, NJ
A roof cleaning service handles the full job, from protecting the yard to treating the roof and clearing gutters. Never climb onto a wet roof to clean it; leave the roof work to someone with fall protection. While cleaning, a roofer can flag loose shingles, cracked tiles and failing pipe boots.
For Ridgewood homes, it often makes sense to clean the gutters right after the roof. Zinc or copper strips installed near the ridge help slow regrowth, as rain washes metal ions down the roof. Trimming branches that shade or drop debris on the roof also helps.
Local help
Roof Cleaning Near Me
Roof cleaning calls in Ridgewood come from homes with shaded roofs, older shingles and newer roofs that have started to streak alike. From Ridgewood out to neighboring towns such as Glen Rock, Midland Park, Waldwick and Hawthorne, older roofs often need lichen and moss treatment while newer ones usually just need streaks removed, which is why the cleaning method matters as much as the result.
Searching for roof cleaning near me from Ridgewood or Glen Rock, Midland Park, Waldwick and Hawthorne? Call (551) 370-0363 to talk to a roofer who works in your part of town.
Roofs in this climate
Cold winters bring snow, ice and a long stretch of freezing nights. When warm attic air melts the snow, the meltwater runs down and freezes again at the eaves, which is how ice dams form and back water up under the shingles. Coastal storms and heavy spring rain drive water sideways into flashing, valleys and old chimneys. Most homeowners in Ridgewood, NJ have the roof checked in the fall and again after the snow melts.
Why call
Why fix it now
Less damage
Small roof problems caught early usually stay small repairs.
Roofers who know Ridgewood
Roofers in Ridgewood know the roof types and weather wear common in local homes.
Straight answers
Ask your questions before you agree to anything.
Roof Cleaning questions
When should I clean my roof again?
Most roofs need cleaning only every few years, depending on shade and moisture. Shaded roofs and roofs near trees grow algae and lichen faster. Zinc or copper strips and trimmed branches can stretch the time between cleanings.
Does roof cleaning make my roof last longer?
Algae is mostly cosmetic, but lichen and moss can shorten roof life. Cleaning also makes it easier to see loose shingles and worn flashing. Cleaning the wrong way, with high pressure, shortens roof life instead.
Will roof cleaning harm my plants?
Plants are protected by soaking them with fresh water ahead of the cleaning and rinsing them again when it is done. Some crews also tarp shrubs right below the eaves. Mention any prized plants before work starts.
What causes black streaks on my roof?
Most dark roof stains come from a hardy algae that spreads on the wind. It thrives in shade and moisture and spreads down the slope with rainwater. Newer shingles with copper granules resist it better.
Can I pressure wash my roof?
High-pressure washing damages most roofs. The force blasts off granules and can drive water under the shingles or crack tile. Ask for a soft wash instead.
More questions? Call (551) 370-0363
Often needed together
Roof Moss Removal
Gentle moss removal and treatment that kills the roots and slows regrowth, with zinc or copper strips to keep it from coming back.
Learn moreGutter Cleaning
Clearing clogged gutters and downspouts so rain drains away from the house, before overflow rots the fascia.
Learn moreRoof Maintenance
Routine roof care: clearing valleys, replacing worn pipe boots, sealing exposed nails and resetting lifted shingles, with each task done the right way for the material.
Learn moreCedar Shake Roof Repair
Repairs for split shakes, rot at the butts, moss buildup and leaking valleys on wood roofs, matched to what a close look at the roof actually finds.
Learn more
Looking for something else?
See all roofing servicesTalk to a Ridgewood roofer about roof cleaning
Call (551) 370-0363 to talk to a roofer serving Ridgewood, NJ.