Lichen removal
Crusty lichen is treated so it dies and releases from the shingles then wash away over time.
Exterior Services
Roof Cleaning Summit, NJ
A roofer in Summit can clean black algae streaks, lichen and grime off a roof using a low-pressure soft wash that does not strip shingle granules, with tips to keep the streaks from returning. One call to (908) 679-5768 reaches a nearby roofer who handles roof cleaning.
Dark streaks on a roof are usually a type of airborne algae, often called Gloeocapsa magma, that feeds on the limestone filler in many asphalt shingles. It forms a dark outer layer that shows up as streaks following the path of rainwater. 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.
The method decides whether cleaning helps the roof or shortens its life. 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. Soft washing uses a cleaning mix and gentle rinsing to kill algae and lichen, and lets the roof dry naturally.
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. It also helps to know what is growing beneath the roof edges, since plants are protected during the wash.
Roof Cleaning is often paired with roof moss removal and gutter cleaning, depending on the cause.
Looking for Summit roof cleaning? Call (908) 679-5768 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.
Check the surface
The roofer checks the roof material, the type of growth and the condition of the shingles, flashing and vents before cleaning. Problems hidden under the grime often show up here.
Cover the plants
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.
Apply the soft wash
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.
Rinse gently
Debris on the roof and in the gutters is removed, and the roof is rinsed lightly. Heavy lichen can take several rains to wash away fully.
Rinse the plants
Once the roof is done, landscaping and surfaces are rinsed and the gutters are checked. The roofer notes any shingles or flashing that need repair.
What is included
What roof cleaning covers
Zinc strips
Metal strips are added to slow algae and moss regrowth so rain carries metal ions down the roof.
Algae streak removal
Dark streaks on shingles are treated and rinsed without stripping granules.
Valley clearing
Built-up debris is swept off the roof to stop water from backing up.
Tile roof cleaning
Metal roofs are washed to remove grime and staining with solutions safe for metal finishes.
Related service
Roof Soft Wash Summit, NJ
Soft washing is the low-pressure method used on most roofs, relying on a cleaning solution rather than force. 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 Summit, 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 Summit, NJ
A roof cleaning service handles the full job, from protecting the yard to treating the roof and clearing gutters. A wet, treated roof is extremely slippery, which is why roof cleaning is not a good do-it-yourself job. A cleaning by a roofer doubles as a close look at the roof surface.
In Summit, 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. Cutting back overhanging limbs lets the roof dry faster.
Local help
Roof Cleaning Near Me
Around Summit, most roof cleaning requests start with dark algae streaks on the shaded side of the house. From Summit out to neighboring towns such as Chatham, Mountainside, New Providence and Short Hills, older roofs often need lichen and moss treatment while newer ones usually just need streaks removed, and catching growth early makes the cleaning easier on the roof.
Searching for roof cleaning near me from Summit or Chatham, Mountainside, New Providence and Short Hills? Call (908) 679-5768 to talk to a roofer who works in your part of town.
Roofs in this climate
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, building ice dams that push water up under the shingles. Strong coastal storms push rain into every weak spot at the flashing and valleys. Most homeowners in Summit, NJ have the roof checked in the fall and again after the snow melts.
Why call
Why fix it now
Drier ceilings
Small roof problems caught early usually stay small repairs.
Local knowledge
Local roofers see the same roofs and storm damage across Summit and nearby towns.
Straight answers
Ask your questions before you agree to anything.
Roof Cleaning questions
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. Covering sensitive plants and diverting gutter runoff adds protection. Let the roofer know about delicate gardens so they can plan.
When should I clean my roof again?
Most roofs need cleaning only every few years, depending on shade and moisture. Roofs under trees or on shaded slopes may need it more often. Zinc or copper strips and trimmed branches can stretch the time between cleanings.
What causes black streaks on my roof?
Black streaks on a roof are usually algae, often a type called Gloeocapsa magma. The algae forms a dark outer coating that shows up as long streaks. Newer shingles with copper granules resist it better.
Is pressure washing safe for my roof?
A pressure washer does more harm than good on shingles. The force blasts off granules and can drive water under the shingles or crack tile. A low-pressure soft wash cleans the roof without that damage.
Does roof cleaning make my roof last longer?
Cleaning helps most when lichen or moss is present, since they damage shingles over time. Cleaning also makes it easier to see loose shingles and worn flashing. The method makes all the difference.
More questions? Call (908) 679-5768
Related services
Roof Moss Removal
Removing moss from shingle, shake and tile roofs without tearing up the roofing, and repairs to any shingles the moss damaged.
Learn moreGutter Cleaning
Gutter cleaning that clears leaves, needles and sludge by hand, then flushes the gutters and downspouts, so the next storm drains the way it should.
Learn moreRoof Maintenance
Seasonal roof maintenance for shingles, flashing, vents, gutters and attic airflow, 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, matched to what a close look at the roof actually finds.
Learn more
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