Streak cleaning
Black algae streaks are removed with a low-pressure soft wash without stripping granules.
Exterior Services
Roof Cleaning Pequannock, NJ
A roofing contractor in Pequannock can clean shingle, tile and metal roofs with the right solution and gentle rinsing instead of a pressure washer, while protecting plants, siding and gutters below. Dial (862) 458-0110 to talk with a local roofer about cleaning your roof.
Those black streaks running down a shingle roof are almost always algae, not dirt or mold from inside the house. The algae builds a dark protective coating that absorbs sunlight, which is why the streaks look black and grow down the slope where water runs. Algae on its own is mainly cosmetic, though it often travels with lichen and moss, which hold water and work under the shingle edges.
How the roof is cleaned matters more than how clean it looks afterward. Pressure washing blasts the protective granules off asphalt shingles, can force water under the laps and can crack tile or slate, so roofers avoid it on most roofs. With a soft wash, the cleaning solution does the work, not water pressure.
It helps to note what you see before the visit. Note whether the stains are black streaks, green patches, gray or crusty spots of lichen, or clumps of moss, and which slopes they cover. Say whether the roof is asphalt, tile, metal or wood, and what is planted along the house.
If the problem goes deeper than it first looked, a Pequannock roofer may also recommend roof moss removal or gutter cleaning.
Dealing with this in Pequannock, NJ right now? Call (862) 458-0110 to reach a nearby roofing contractor.
Call nowThe process
How roof cleaning works
A roof cleaning protects the house and yard before any solution goes on the roof.
Start with a look
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.
Prepare the site
Plants and lawn near the house are watered down, and delicate shrubs may be covered. Siding and windows are rinsed to keep the solution from drying on them.
Treat the roof
The mix is sprayed gently over the stained areas and left to work on the algae and lichen. Shingles, tile and metal each get a solution suited to them.
Finish the wash
After the solution works, loose debris is swept from valleys and the gutters are cleared. Some stains keep fading over the following weeks as rain finishes the job.
Clean up below
The area below the eaves gets a final rinse to dilute any runoff. Any damage found during cleaning is pointed out.
What is included
Roof cleaning a roofer can handle
Tile roof cleaning
Tile and metal roofs get a cleaning suited to the material without walking on fragile tile.
Regrowth prevention
Zinc or copper strips can be installed near the ridge to keep the roof clean longer.
Valley clearing
Debris dams are removed from around skylights to stop water from backing up.
Lichen treatment
Lichen patches are sprayed and left to loosen then wash away over time.
Related service
Roof Soft Wash Pequannock, NJ
A soft wash treats the roof with a diluted cleaning mix at about the pressure of a garden hose. A common soft wash uses a diluted chlorine solution with a soap-like surfactant so it stays on the roof long enough to work. Because it kills the growth rather than scraping it off, the roof stays clean longer than with pressure washing.
In Pequannock, a soft wash is the safe choice for asphalt shingle roofs with algae streaks. Plants and grass are watered ahead of time and rinsed again afterward so the runoff is diluted. Some streaks fade right away, while heavy lichen may take a few rains to wash off fully.
Related service
Roof Cleaning Service Pequannock, NJ
Professional roof cleaning covers prep, treatment, debris removal and cleanup, done from a ladder or with roof safety gear. Roofs become slick once wet or treated, and falls from roofs are a real hazard. A roofer also brings the advantage of spotting damage, like lifted shingles or worn flashing, while the roof is clean.
In Pequannock, many homeowners pair roof cleaning with gutter cleaning, since the gutters fill with debris washing off the roof. After cleaning, metal strips near the peak can keep algae and moss from coming back as quickly. More sun and air on the roof means less growth.
Local help
Roof Cleaning Near Me
Roof cleaning calls in Pequannock come from homes with shaded roofs, older shingles and newer roofs that have started to streak alike. Homes in Pequannock and nearby towns like Pompton Plains, Lincoln Park, Towaco and Riverdale range from older roofs with standard shingles to newer roofs with algae-resistant granules, and both can streak over time, which is why the cleaning method matters as much as the result.
For roof cleaning in Pequannock, NJ or nearby towns like Pompton Plains, Lincoln Park, Towaco and Riverdale, call (862) 458-0110 to reach a roofer who covers your street.
What the local climate does to a roof
Winters here are long and cold, with snow on the roof for weeks at a time and plenty of nights below freezing. Heat escaping from the attic melts snow on the upper roof, and the water refreezes at the colder 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 Pequannock, 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 Pequannock
Roofers in Pequannock know the roof types and weather wear common in local homes.
Straight answers
Ask your questions before you agree to anything.
Roof Cleaning FAQ
Is pressure washing safe for my roof?
High-pressure washing damages most roofs. It wears down the surface that protects shingles from the sun. Soft washing is the safe alternative.
When should I clean my roof again?
Many roofs go several years between cleanings. Sunny roofs with good airflow stay clean longer. Preventive strips help keep the roof clean longer.
Will roof cleaning harm my plants?
Landscaping is watered down before, during and after the wash. Covering sensitive plants and diverting gutter runoff adds protection. Point out any plants you want extra care around.
What causes black streaks on my roof?
Those dark stains are almost always airborne algae, not dirt. It thrives in shade and moisture and spreads down the slope with rainwater. Shade, trees and humidity all make it worse.
Is cleaning a roof worth it?
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.
More questions? Call (862) 458-0110
Related services
Roof Moss Removal
Removing moss from shingle, shake and tile roofs without tearing up the roofing, so water drains the way the roof was built for.
Learn moreGutter Cleaning
Clearing clogged gutters and downspouts so rain drains away from the house, so the next storm drains the way it should.
Learn moreRoof Maintenance
Routine roof care: clearing valleys, replacing worn pipe boots, sealing exposed nails and resetting lifted shingles, before debris, wear and weather add up.
Learn moreCedar Shake Roof Repair
Replacing split, cupped or missing shakes, clearing moss and fixing valleys and ridge caps, so a sound cedar roof keeps shedding water.
Learn more
Looking for something else?
See all roofing servicesNeed roof cleaning in Pequannock, NJ?
Call (862) 458-0110 for a local roofer in Pequannock and nearby towns.