A technical lexicon of the compounds, organisms, and techniques impacting your home.
A photosynthetic cyanobacterium (blue-green algae) responsible for the stark black streaks commonly seen on Long Island asphalt shingle roofs. It actively feeds on the crushed limestone filler used in modern shingles, breaking down the roof's structural integrity over time.
Roof CleaningA cleaning method using low pressure (similar to a garden hose) and specialized, perfectly calibrated, biodegradable solutions to safely remove mildew, bacteria, algae, and organic stains from exterior surfaces like vinyl siding and roofs.
House WashingThe white, chalky residue that develops on older vinyl siding due to prolonged UV exposure degrading the PVC material. If you run your hand across dry siding and your fingers turn white, the siding is oxidized.
House WashingAlso known as 'shotgun fungus,' these are tiny, hard black specks (spores) that shoot out of wood mulch and permanently attach themselves to light-colored vinyl siding.
TroubleshootingA white, powdery mineral salt deposit that migrates to the surface of concrete, brick, or pavers as water evaporates. Commonly seen on retaining walls and new patios.
PaversA high-tech blend of fine sand and binding polymers used to fill the joints between pavers. When activated with water, it hardens to lock pavers in place and prevents weed growth and insect tunneling.
PaversA complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. Lichen forms crusty, pale green or gray patches on roofs and its acidic roots aggressively eat into the asphalt shingle.
Roof CleaningA surface-active agent used in our commercial soft washing mixes. Surfactants decrease the surface tension of water, creating a thick foam that allows the cleaning chemicals to 'dwell' on vertical surfaces rather than running off into the soil.
ChemistryVisible, permanent vertical streaks etched into siding, concrete, or wood caused by an amateur using a high-pressure wand incorrectly or too closely to the surface.
TroubleshootingThe process of stripping gray, dead wood fibers and tannin stains from Cedar shake siding or roofing natively found on luxury Long Island and Hamptons homes.
Specialty CleaningIt is highly discouraged to use high pressure on vinyl siding. High pressure drives water behind the panels, causing hidden mold inside the walls and permanently etching 'wand marks' into the plastic.
House WashingThe cost varies by square footage, but a standard house soft wash on Long Island typically ranges from $300 to $800. Roof cleaning ranges from $500 to $1,500 depending on pitch and severity.
PricingAmateur power washers often burn landscaping with heavy bleach mixes or snap branches with high pressure. Runoff can poison soil if not properly neutralized.
LandscapingSpring (March-May) is the most popular time to remove winter grime and pollen, but Fall (September-November) is equally critical to prevent organic growth from freezing onto the siding over winter.
MaintenanceThose black streaks are not dirt or defective shingles; they are Gloeocapsa Magma, an algae that eats the limestone filler in your roof, significantly reducing its lifespan.
Roof CleaningPower washing uses high mechanical pressure (up to 4000 PSI) to blast away dirt, suitable only for concrete. Soft washing uses chemical cleaning at low pressure (60 PSI) to kill organic growth safely, suitable for roofs and siding.
EducationTrex and composite decking can be permanently scarred by high-pressure washing. The manufacturer explicitly warns against using pressure over 1500 PSI or standard bleach.
Deck CleaningThe process of applying a topical or penetrating chemical barrier to concrete after washing to prevent water intrusion, cracking during winter freezes, and oil stains.
Pavers & ConcreteOrange rust stains from irrigation systems or battery acid cannot be removed with standard pressure washing or bleach. They require specialized acidic restorations.
TroubleshootingThe removal of 'tiger stripes'—the vertical black lines on the outside of aluminum gutters caused by electrostatic bonding of pollutants and asphalt runoff.
House WashingThe sanitation of commercial trash enclosures to eliminate grease, foul odors, maggot infestations, and slip hazards.
Commercial CleaningUsing a surface cleaner attachment to uniformly clean concrete driveways, removing dirt, tire marks, and algae without leaving 'zebra stripes' caused by amateur wand usage.
ConcreteMoss grows thick root systems into asphalt shingles. Scraping or pressure washing moss will rip the granules right off the roof.
Roof CleaningStucco and Dryvit are highly porous and fragile. High pressure will easily blast holes in the finish and drive water into the home's substrate.
House WashingMotor oil deeply penetrates porous concrete. The longer it sits, the harder it is to remove. Standard cold water washing will just push the oil deeper.
TroubleshootingOlder brick and mortar are extremely susceptible to high-pressure damage. The mortar can be blown out, requiring expensive re-pointing.
MasonryDuring house washing, soap can dry on windows if not rinsed properly. Also, hard well water can leave calcium deposits (hard water stains) on the glass.
House WashingMost exterior cleaning services do not require the homeowner to be present, provided all windows are closed, pets are inside, and water access is available.
Service FAQsA standard 2,000 sq ft home typically takes 1.5 to 2.5 hours using professional soft washing equipment.
Service FAQsThe cleaning of the overhangs and roof edges where mold and spider webs heavily accumulate due to lack of direct sunlight and rain rinse.
House Washing