Improve appearance
Removing heavy moss and staining brightens the whole property and boosts curb appeal.
Roof Cleaning
Manual moss removal and soft‑wash treatment — clean, protect and improve appearance.
Our roof cleaning approach
Manual moss removal + soft‑wash biocide treatment
We provide roof cleaning across Monmouth County, NJ. Aggressive pressure is avoided on tiles. Moss is removed manually using roof ladders and safety systems, followed by a soft‑wash biocide treatment to kill remaining spores and slow regrowth. Gutters are cleared of the debris we create.
- Manual moss removal: Scraped from tiles and ridges with care; fragile areas protected.
- Soft‑wash treatment: Professional biocide applied after cleaning to treat spores and lichen.
- Gutter clear‑out: Debris from the roof is collected and downpipes are left flowing.
- Access & safety: Roof ladders, harnesses and scaffold/towers as required.
- Aftercare: Optional follow‑up treatment months later to extend the clean period.
Concrete, clay or slate — we’ll advise the best option and provide photos if you can’t access the view.
Why clean your roof
Protect tiles and keep gutters free‑flowing
Protect tiles
Moss holds moisture and can lift edges; careful cleaning reduces frost damage risk.
Keep gutters clear
Clearing the roof and gutters together keeps water moving away from your home.
Fully Insured
Public liability coverage
Soft‑wash
Biocide treatment slows regrowth
Fast Response
Quotes the same day
100% Satisfaction
Walk‑through on completion
Frequently Asked Questions
What causes black streaks and dark staining on roofs in New Jersey?
Black streaks on roofs in Monmouth County, NJ are almost always caused by Gloeocapsa magma, a blue-green algae that feeds on the limestone filler in asphalt shingles. The algae retains moisture, which accelerates shingle deterioration and can shorten your roof's lifespan. Left untreated, it spreads and eventually turns to full moss and lichen coverage, which causes physical lifting of shingles.
Is soft washing safe for my roof shingles?
Soft washing is the method recommended by the Asphalt Roofing Manufacturers Association (ARMA) for cleaning asphalt shingles. It uses low-pressure water — similar to a garden hose — combined with a biocide solution that kills algae, moss, and lichen at the root without the pressure that would strip granules from the shingle surface. We never use high-pressure washing on tile roofs in Morganville or Marlboro.
How much does roof cleaning cost in Monmouth County, NJ?
Roof cleaning in Monmouth County typically ranges from $300–$700 for a standard residential home, depending on roof size, pitch, degree of moss/algae coverage, and access complexity. Heavily mossy roofs or those requiring scaffolding for safe access will be at the higher end. Monmouth Outdoor Services provides free quotes — call (732) 427-8821.
How long does it take for moss to disappear after roof cleaning?
The biocide treatment kills moss and lichen spores immediately, but the dead material takes 4–6 weeks to dry out and naturally flake off the roof surface. Black algae streaks typically fade within 1–2 weeks as the dead organisms wash away with rain. We do not blast moss off with high pressure, which protects your shingles and allows a clean, gradual shed.
Will roof cleaning prevent moss from coming back?
The biocide treatment significantly slows regrowth — typically providing 1–3 years of protection depending on tree coverage and shade exposure. Heavily shaded north-facing roofs in Monmouth County will see faster return than open south-facing slopes. We offer optional follow-up treatments to extend the clean period and maintain results.
Do you clear gutters after roof cleaning?
Yes — debris from the moss removal process goes directly into the gutters, so clearing them is part of our roof cleaning service. We collect the debris and ensure downpipes are flowing freely before we leave. You can also book a separate full gutter vacuum clean with camera inspection if you want a more thorough check of your guttering system.
How do you access the roof safely?
We use professional roof ladders, harnesses, and scaffold or access towers as required for the job. Safety is not optional — we will not work on a roof in unsafe conditions. We carry full public liability insurance and our team is trained to work at height on all residential roof types across Morganville, Marlboro, Manalapan, Freehold, and Holmdel.
Can power washing damage roof tiles?
High-pressure washing can absolutely damage roof tiles — it strips granules from asphalt shingles, cracks fragile clay tiles, and forces water under ridges and edges. We never use high pressure on any tile roof. Our process is manual moss removal followed by a soft-wash biocide rinse, which achieves a thorough clean without any mechanical damage to the surface.
Will soft washing void my roof warranty?
Soft washing done correctly does not void your roof warranty — in fact, it's the method explicitly recommended by the Asphalt Roofing Manufacturers Association (ARMA) for cleaning asphalt shingles. The key distinction is that we use low pressure comparable to a garden hose rather than high-pressure washing, which ARMA states can void warranties. If you have a specific manufacturer warranty and want us to confirm compatibility before we begin, share the warranty documentation and we'll check the cleaning terms.
How do I know if my roof needs cleaning vs. replacement?
A roof that needs cleaning will show algae streaks, moss patches, or lichen growth on otherwise structurally intact shingles. Signs that cleaning alone won't resolve the issue include: granule loss that exposes the underlying mat, cracking or curling shingle edges, missing sections, sagging, or daylight visible in the attic. We perform a condition assessment on every job — if we see anything that suggests replacement is the more appropriate call, we'll tell you directly.
Can you clean cedar shake or wood shingle roofs?
Yes — cedar shake and wood shingle roofs require a low-pressure soft wash with a solution specifically suited to natural wood. High pressure is damaging on cedar and is never used. The cleaning process removes algae, mold, and discolouration while preserving the wood surface. Cedar roofs in Monmouth County are less common than asphalt shingle, but we have the equipment and product range to handle them properly. Call (732) 427-8821 to discuss your specific roof.
Who should I call to remove moss from my roof in Monmouth County?
Call Monmouth Outdoor Services at (732) 427-8821. We cover Morganville, Marlboro, Manalapan, Freehold, Holmdel, and the broader Monmouth County area for residential and commercial roof soft washing. We use a biocide-based method recommended by ARMA that kills moss and lichen without pressure damage to your shingles, and we include a gutter clear-out as part of every roof clean so the debris has a clear path off the roof.