Zinc strips
Zinc or copper strips can be installed near the ridge to keep the roof clean longer.
Exterior Services
Roof Cleaning Maplewood, NJ
A roofer in Maplewood 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 (973) 858-1830 reaches a nearby roofer who handles roof cleaning.
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. 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.
How the roof is cleaned matters more than how clean it looks afterward. 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.
A few details help plan the cleaning. Write down which parts of the roof are stained and whether you see green moss, gray lichen or just dark streaks. 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.
Dealing with this in Maplewood, NJ right now? Call (973) 858-1830 to talk to a local roofer.
Call nowThe process
What happens during a roof cleaning
Here is how a roofer typically cleans a roof.
Check the surface
Before any spraying, the roof is checked for loose shingles, cracked tiles and worn flashing that the cleaning should not disturb. Damaged shingles are better repaired than washed.
Protect the yard
Landscaping below the eaves is soaked with fresh water so it does not absorb the cleaning solution. Downspouts may be diverted so runoff does not pool in garden beds.
Apply the soft wash
A cleaning solution matched to the roof material is applied at low pressure, from the bottom of the slope up. Shingles, tile and metal each get a solution suited to them.
Clear the debris
Debris on the roof and in the gutters is removed, and the roof is rinsed lightly. Lichen often releases over time after it dies.
Rinse the plants
The area below the eaves gets a final rinse to dilute any runoff. This is a good time to ask about preventing regrowth.
What is included
What roof cleaning covers
Metal roof cleaning
Metal roofs are washed to remove grime and staining so the surface is not harmed.
Streak cleaning
Algae staining is cleaned off without scrubbing so the roof color comes back.
Valley clearing
Built-up debris is swept off the roof to stop water from backing up.
Lichen treatment
Lichen patches are sprayed and left to loosen without damaging the surface.
Related service
Roof Soft Wash Maplewood, NJ
A soft wash treats the roof with a diluted cleaning mix at about the pressure of a garden hose. The solution, often a diluted sodium hypochlorite mix with a surfactant to help it cling, kills algae, lichen and moss spores where they grow. Because it kills the growth rather than scraping it off, the roof stays clean longer than with pressure washing.
Most Maplewood homeowners with streaked shingles are well served by a soft wash. Gardens below the eaves are soaked first and rinsed again at the end. Results show quickly on algae, while lichen releases more slowly.
Related service
Roof Cleaning Service Maplewood, 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. While cleaning, a roofer can flag loose shingles, cracked tiles and failing pipe boots.
Many Maplewood roof cleanings end with clearing the gutters and downspouts. 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
Around Maplewood, most roof cleaning requests start with dark algae streaks on the shaded side of the house. Homes in Maplewood and nearby towns like Vauxhall, Union, Springfield and Short Hills range from older roofs with standard shingles to newer roofs with algae-resistant granules, and both can streak over time, and catching growth early makes the cleaning easier on the roof.
Need roof cleaning around Maplewood? Call (973) 858-1830 for a Maplewood roofer who serves the towns around it too.
What the local climate does to a roof
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. Strong coastal storms push rain into every weak spot at the flashing and valleys. That is why roof repair in Maplewood is busiest after a hard winter and before the next one.
Why call
Why not wait
Less damage
A roof problem fixed early rarely spreads to the decking, the insulation or the ceilings.
Local knowledge
Roofers in Maplewood know the roof types and weather wear common in local homes.
Know what happens next
Ask your questions before you agree to anything.
Roof Cleaning FAQ
Does roof cleaning make my roof last longer?
Removing lichen and moss helps the roof last, since both hold moisture and work under the shingle edges. A clean roof also lets a roofer spot damage that grime was hiding. The method makes all the difference.
Will roof cleaning harm my plants?
Good roof cleaners pre-wet and rinse landscaping to dilute any runoff. Some crews also tarp shrubs right below the eaves. Mention any prized plants before work starts.
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 pressure washing safe for my roof?
A pressure washer does more harm than good on shingles. It strips the protective granules, can lift shingle tabs and forces water under the laps, which shortens the roof life. Ask for a soft wash instead.
When should I clean my roof again?
Most roofs need cleaning only every few years, depending on shade and moisture. Sunny roofs with good airflow stay clean longer. Zinc or copper strips and trimmed branches can stretch the time between cleanings.
More questions? Call (973) 858-1830
Related services
Roof Moss Removal
Clearing thick moss off a roof and checking the shingles it lifted, and repairs to any shingles the moss damaged.
Learn moreGutter Cleaning
Clearing clogged gutters and downspouts so rain drains away from the house, with a check of the seams and hangers along the way.
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 servicesTalk to a Maplewood roofer about roof cleaning
Call (973) 858-1830 for a local roofer in Maplewood and nearby towns.