Moss & Algae Removal by ARCM Roofing
Professional moss and algae removal that protects your shingles, restores curb appeal, and extends the life of your roof.
5 Highlights on Moss & Algae Removal
Roof Preservation, Not Just Cleaning
Moss and algae removal clears organic growth before it damages your shingles, underlayment, and gutters. ARCM Roofing treats every roof with methods approved by the Asphalt Roofing Manufacturers Association.
Soft Wash Treatment
Low-pressure solutions kill Gloeocapsa magma algae and moss at the root without stripping protective granules — the ARMA-recommended method.
Shingle-Safe Chemistry
Sodium hypochlorite blends and biodegradable surfactants rated safe for architectural shingles, cedar shakes, and tile roofing.
Zinc and Copper Strip Installation
Metal strips along ridge lines release ions with each rainfall and prevent regrowth for years after the treatment.
Gutter and Downspout Clearing
Every moss removal includes flushing debris from gutters so runoff drains properly and moisture stops feeding new growth.
Warranty Protection
Manufacturer warranties from GAF, Owens Corning, and CertainTeed often require documented maintenance. Our service reports satisfy those requirements.
Kill it at the root, flush the gutters, stop the regrowth.
Why Choose Us
Why Choose Our Moss & Algae Removal
Many pressure washing companies blast roofs with high PSI equipment. That approach strips granules, voids warranties, and shortens shingle life by years. We do the opposite.
Our technicians train as roofers first. They understand how moisture wicks under shingle tabs, how moss rhizoids lift roofing material, and how algae stains signal deeper moisture problems. When our crew climbs onto your roof, they inspect flashing, seal points, and ridge caps while they clean. Our soft wash methods follow ARMA technical bulletins, and we hold full licensing and insurance.
Here's what sets us apart:
Written two-year regrowth warranty
Every treatment is covered in writing. If growth returns within the coverage period, we retreat at no charge.
Roof condition report with photos
Our technicians inspect flashing, seal points, and ridge caps while they clean — you get an assessment and a treatment in one visit.
Eco-conscious rinse practices
Landscaping, siding, pets, koi ponds, and rain barrels all get protected before any application begins.
Transparent flat-rate pricing
Free inspection, firm quote, no surprise charges on the invoice.
We treat moss removal as roof preservation. Your shingles last longer, your home looks better, and your warranty stays intact.
Warning Signs
Signs You Need Moss & Algae Removal
Black Streaks Running Down Shingle Slopes
Those dark stains are Gloeocapsa magma, a cyanobacteria that feeds on the limestone filler inside asphalt shingles. The streaks spread downward with rainwater and darken every season. Left untreated, the algae degrades granule adhesion and accelerates shingle aging.
Green Moss Clumps Along the North-Facing Slope
Moss thrives in shade and moisture. It anchors into shingle surfaces with rhizoids, lifts shingle edges, and traps water against the roof deck. Lifted tabs let wind-driven rain penetrate the underlayment and rot the decking below.
Debris Accumulation in Valleys and Behind Chimneys
Pine needles, leaves, and seed pods collect in roof valleys and hold moisture. That damp organic layer becomes a seedbed for moss colonies. If your valleys look green or spongy, growth has already taken hold.
Clogged Gutters Filled With Granules and Moss Fragments
When moss dislodges during storms, it washes into gutters along with the shingle granules it pulled loose. Check your downspout splash blocks. Heavy granule loss means the growth is actively eating your roof.
Interior Signs of Moisture Intrusion
Ceiling stains, attic condensation, and musty odors near the roofline often trace back to moss-lifted shingles. Moisture wicks under compromised tabs, saturates the felt underlayment, and rots rafters over time.
Spot any of these? Schedule an inspection before minor growth becomes major repair work.
How We Work
Our Moss & Algae Removal Process
01
Roof Inspection
A qualified technician examines your shingles, flashing, valleys, and gutters. We photograph problem areas, measure growth coverage, and check for existing damage like lifted tabs or cracked sealant.
02
Property Protection
We wet down landscaping, cover delicate plants, and redirect downspouts away from garden beds. Your siding, windows, and walkways stay shielded throughout.
03
Debris Clearing
Crews hand-remove loose moss clumps, leaves, and branch debris with soft bristle brushes. We never scrape or power wash — both methods tear granules from shingle surfaces.
04
Soft Wash Application
We apply a shingle-safe cleaning solution at low pressure. The treatment kills moss rhizoids and algae colonies on contact, then keeps working for weeks as rain rinses residue away.
05
Gutter Flush and Rinse
Technicians flush gutters and downspouts, clear all treatment residue from hard surfaces, and rinse landscaping a final time.
06
Prevention and Reporting
We install zinc or copper strips on request, then deliver a photo report documenting your roof's condition and our completed work.
Most treatments finish in two to four hours. Dead moss releases over the following four to eight weeks — without a single damaged shingle.
Brands We Use
EPA-Registered Products, Precisely Applied
Wet & Forget
Gentle bleach-free treatment for sensitive roofing
Spray & Forget
Non-caustic roof cleaner for moss and algae stains
BioAdvanced
Fast-acting outdoor moss and algae formula
Moss B Ware
Lilly Miller zinc sulfate powder for moss control
30 SECONDS
Trusted outdoor cleaner for heavy growth
Defy
Concentrated oxygenated roof cleaner
ZincShield
Pure zinc strips for long-term prevention
CopperCare
Copper ridge strips that stop regrowth
Simple Green
Oxy Solve biodegradable exterior cleaner
Corte Clean
Composite-safe cleaning treatment
Safety guides every product choice. Our technicians measure dilution ratios precisely, follow manufacturer application rates, and rinse all runoff areas thoroughly. Every product we use carries EPA registration for residential exterior cleaning.
FAQs
FAQs About Moss & Algae Removal
›What is moss and algae removal?
Moss and algae removal is a roof cleaning service that kills and clears organic growth from shingles using low pressure soft wash treatments. The process removes black algae streaks, green moss colonies, and lichen without damaging roofing materials.
›When should I schedule moss removal?
Spring and fall deliver the best results. Moderate temperatures help cleaning solutions work effectively, and treatment before the wet season stops moss from spreading during peak growth months.
›Why does moss damage a roof?
Moss anchors into shingles with root-like rhizoids, lifts shingle tabs, and holds moisture against the roof deck. Trapped water rots decking, corrodes fasteners, and creates entry points for leaks.
›How does moss and algae removal work?
Our technicians apply a shingle-safe solution that kills growth on contact. Dead moss loosens over four to eight weeks and washes away with rainfall. Zinc or copper strips prevent regrowth afterward.
›Can I pressure wash my roof instead?
No. Pressure washing strips protective granules from asphalt shingles, voids manufacturer warranties, and shortens roof life. Soft washing cleans just as thoroughly without the damage.
›Does moss removal come with a warranty?
Yes. ARCM Roofing backs every treatment with a written two-year regrowth warranty. Roofs fitted with our zinc or copper strips stay protected even longer.
›How much does professional moss removal cost?
Pricing depends on roof size, pitch, and growth severity. We provide free inspections and flat-rate quotes, so you know the full cost before work begins.
Related Services
Stop Moss Before It Lifts Your Shingles
2–4 hour treatment · Two-year regrowth warranty · Zinc/copper prevention